EXECUTION COPY

                        RECONSTITUTED SERVICING AGREEMENT

          THIS RECONSTITUTED SERVICING AGREEMENT (this "Agreement"), entered
into as of the 1st day of May, 2005, by and between LEHMAN BROTHERS HOLDINGS
INC., a Delaware corporation (the "Seller" or "Lehman Brothers Holdings"), and
WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association (the
"Servicer"), and acknowledged by AURORA LOAN SERVICES LLC, a Delaware limited
liability company ("Aurora"), and CITIBANK, N.A., a national banking association
(the "Trustee"), recites and provides as follows:

                                    RECITALS

          WHEREAS, Lehman Brothers Bank, FSB (the "Bank") acquired certain fixed
rate, conventional, first lien, residential mortgage loans from the Servicer
pursuant to the Seller's Warranties and Servicing Agreement between the Seller
and the Servicer, dated as of March 1, 2005 for Fixed Rate Mortgage Loans
(Mortgage Loan Series 2005-W14 (the "SWSA").

          WHEREAS, pursuant to an Assignment and Assumption Agreement, dated May
1, 2005 (the "Assignment and Assumption Agreement") annexed as Exhibit F hereto,
the Seller acquired from the Bank all of the Bank's right, title and interest in
and to the mortgage loans currently serviced under the SWSA and assumed for the
benefit of each of the Servicer and the Bank the rights and obligations of the
Bank as owner of such mortgage loans pursuant to the SWSA.

          WHEREAS, the Seller has conveyed the mortgage loans identified on
Exhibit C hereto (the "Serviced Mortgage Loans") to Structured Asset Securities
Corporation, a Delaware special purpose corporation ("SASCO"), which in turn has
conveyed the Serviced Mortgage Loans to the Trustee, pursuant to a trust
agreement, dated as of May 1, 2005 (the "Trust Agreement"), among the Trustee,
Aurora, as master servicer ("Aurora", and, together with any successor master
servicer appointed pursuant to the provisions of the Trust Agreement, the
"Master Servicer") and SASCO.

          WHEREAS, the Serviced Mortgage Loans are currently being serviced by
the Servicer pursuant to the SWSA attached hereto as Exhibit B.

          WHEREAS, the Seller desires that the Servicer continue to service the
Serviced Mortgage Loans, and the Servicer has agreed to do so, subject to the
rights of the Seller and the Master Servicer to terminate the rights and
obligations of the Servicer hereunder as set forth herein and to the other
conditions set forth herein.

          WHEREAS, the Seller and the Servicer agree that the provisions of the
SWSA shall apply to the Serviced Mortgage Loans, except to the extent otherwise
provided herein and that this Agreement shall govern the Serviced Mortgage Loans
for so long as such Serviced Mortgage Loans remain subject to the provisions of
the Trust Agreement.

          WHEREAS, the Master Servicer and any successor master servicer shall
be obligated, among other things, to supervise the servicing of the Serviced
Mortgage Loans on behalf of the Trustee, and shall have the right, under certain
circumstances, to terminate the rights and obligations of the Servicer under
this Agreement.

          WHEREAS, the Seller and the Servicer intend that each of the Master
Servicer and the Trustee is an intended third party beneficiary of this
Agreement.



          NOW, THEREFORE, in consideration of the mutual agreements hereinafter
set forth and for other good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, the Seller and the Servicer hereby
agree as follows:

                                    AGREEMENT

1. Definitions. Capitalized terms used and not defined in this Agreement,
including Exhibit A hereto and any provisions of the SWSA incorporated by
reference herein (regardless if such terms are defined in the SWSA), shall have
the meanings ascribed to such terms in the Trust Agreement.

2. Custodianship. The parties hereto acknowledge that Wells Fargo Bank, National
Association will act as custodian of the Servicing Files for the Trustee
pursuant to a Custodial Agreement, dated May 1, 2005, between Wells Fargo Bank,
National Association and the Trustee.

3. Servicing. The Servicer agrees, with respect to the Serviced Mortgage Loans,
to perform and observe the duties, responsibilities and obligations that are to
be performed and observed under the provisions of the SWSA, except as otherwise
provided herein and on Exhibit A hereto, and that the provisions of the SWSA, as
so modified, are and shall be a part of this Agreement to the same extent as if
set forth herein in full.

4. Trust Cut-off Date. The parties hereto acknowledge that by operation of
Section 4.05 and Section 5.01 of the SWSA, the remittance on June 20, 2005 to
the Trust Fund is to include principal due after May 1, 2005 (the "Trust Cut-off
Date") plus interest, at the Mortgage Loan Remittance Rate collected during the
related Due Period exclusive of any portion thereof allocable to a period prior
to the Trust Cut-off Date, with the adjustments specified in clauses (b), (c),
(d) and (e) of Section 5.01 of the SWSA.

5. Master Servicing; Termination of Servicer. The Servicer, including any
successor servicer hereunder, shall be subject to the supervision of the Master
Servicer, which Master Servicer shall be obligated to ensure that the Servicer
services the Serviced Mortgage Loans in accordance with the provisions of this
Agreement. The Master Servicer, acting on behalf of the Trustee and the SASCO
2005-11H Trust Fund (the "Trust Fund") created pursuant to the Trust Agreement,
shall have the same rights as the Seller under the SWSA to enforce the
obligations of the Servicer under the SWSA and the term "Purchaser" as used in
the SWSA in connection with any rights of the Purchaser shall refer to the Trust
Fund or, as the context requires, the Master Servicer acting in its capacity as
agent for the Trust Fund, except as otherwise specified in Exhibit A hereto. The
Master Servicer shall be entitled to terminate the rights and obligations of the
Servicer under this Agreement upon the failure of the Servicer to perform any of
its obligations under this Agreement, which failure results in an Event of
Default as provided in Section 10.01 of the SWSA. Notwithstanding anything
herein to the contrary, in no event shall the Master Servicer assume any of the
obligations of the Seller under the SWSA and in connection with the performance
of the Master Servicer's duties hereunder the parties and other signatories
hereto agree that the Master Servicer shall be entitled to all of the rights,
protections and limitations of liability afforded to the Master Servicer under
the Trust Agreement.

6. No Representations. Neither the Servicer nor the Master Servicer shall be
obligated or required to make any representations and warranties regarding the
characteristics of the Serviced Mortgage Loans (other than those representations
and warranties made by the Servicer in Section 3.02 of the SWSA hereby restated
as of the date of the SWSA) in connection with the transactions contemplated by
the Trust Agreement and issuance of the Certificates issued pursuant thereto.


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7. Notices. All notices and communications between or among the parties hereto
(including any third party beneficiary thereof) or required to be provided to
the Trustee shall be in writing and shall be deemed received or given when
mailed first-class mail, postage prepaid, addressed to each other party at its
address specified below or, if sent by facsimile or electronic mail, when
facsimile or electronic confirmation of receipt by the recipient is received by
the sender of such notice. Each party may designate to the other parties in
writing, from time to time, other addresses to which notices and communications
hereunder shall be sent.

          All notices required to be delivered to the Master Servicer under this
Agreement shall be delivered to the Master Servicer at the following address:

          Aurora Loan Services LLC
          327 Inverness Drive South
          Englewood, CO 80112
          Mail Stop Code - 3195
          Attn: E. Todd Whittemore - Master Servicing
                SASCO 2005-11H
          Tel: 720-945-3422

          All remittances required to be made to the Master Servicer under this
Agreement shall be made on a scheduled/scheduled basis to the following wire
account:

          JPMorgan Chase Bank, N.A.
          New York, New York
          ABA#: 021-000-021
          Account Name: Aurora Loan Services LLC,
                        Master Servicing Payment Clearing Account
          Account Number: 066-611059
          Beneficiary: Aurora Loan Services LLC
          For further credit to: SASCO 2005-11H

          All notices required to be delivered to the Trustee hereunder shall be
delivered to the Trustee at the following address:

          Citibank, N.A.
          388 Greenwich Street, 14th Floor
          New York, New York 10013
          Attention: Citibank Agency and Trust (SASCO 2005-11H)
          Telephone: (212) 816-5827
          Facsimile: (212) 816-5527

          All notices required to be delivered to the Seller hereunder shall be
delivered to the Seller, at the following address:

          Lehman Brothers Holdings Inc.
          745 Seventh Avenue, 7th Floor
          New York, New York 10019
                    Attention: Leslee Gelber
                    Telephone: 212- 526-5861
                    E-mail: lgelber@lehman.com


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                    With a copy to:
                    Dechert, LLP
                    4000 Bell Atlantic Tower
                    1717 Arch Street
                    Philadelphia, PA 19103
                    Attention: Steven J. Molitor, Esq.

          All notices required to be delivered to the Servicer hereunder shall
be delivered to its office at the address for notices as set forth in the SWSA.

8. Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, NOTWITHSTANDING NEW YORK OR
OTHER CHOICE OF LAW RULES TO THE CONTRARY.

9. Counterparts. This Agreement may be executed in any number of counterparts,
each of which when so executed shall be deemed to be an original, but all of
which counterparts shall together constitute but one and the same instrument.

                      [SIGNATURE PAGE IMMEDIATELY FOLLOWS]


                                        4



          Executed as of the day and year first above written.

                                        LEHMAN BROTHERS HOLDINGS INC.,
                                           as Seller


                                        By:
                                            ------------------------------------
                                            Name: Ellen Kiernan
                                            Title: Authorized Signatory


                                        WELLS FARGO BANK, NATIONAL ASSOCIATION,
                                           as Servicer


                                        By:
                                            ------------------------------------
                                            Name:
                                            Title:

Acknowledged:

AURORA LOAN SERVICES LLC,
   as Master Servicer

By:
    ------------------------------------
    Name: E. Todd Whittemore
    Title: Executive Vice President

CITIBANK, N.A.
   as Trustee


By:
    ------------------------------------
    Name: Karen Schluter
    Title: Vice President



                                    EXHIBIT A

                            Modifications to the SWSA

1. Unless otherwise specified herein, any provisions of the SWSA, including
definitions, relating to (i) representations and warranties relating to the
Mortgage Loans and not relating to the servicing of the Mortgage Loans, (ii)
Mortgage Loan repurchase obligations, (iii) Whole Loan and Pass-Through
Transfers and Reconstitution, and (iv) Assignments of Mortgage, shall be
disregarded for purposes relating to this Agreement. The exhibits to the SWSA
and all references to such exhibits shall also be disregarded.

2.   The definition of "Determination Date" in Article I is hereby amended as
     follows:

          Determination Date: With respect to each Remittance Date, the 15th day
          of the month in which such Remittance Date occurs, or, if such 15th
          day is not a Business Day, the succeeding Business Day.

3.   A new definition of "Prepayment Charge" is added to Article I immediately
     following the definition of "PMI Policy" to read as follows:

          Prepayment Charge: Any prepayment or yield maintenance fees, penalties
          or charges to be paid by the Mortgagor in connection with a Principal
          Prepayment on a Mortgage Loan.

4.   A new definition of "Prepayment Interest Shortfall Amount" is added to
     Article I immediately following the definition of "Prepayment Charge" to
     read as follows:

          Prepayment Interest Shortfall Amount: With respect to any Mortgage
          Loan that was subject to a Principal Prepayment in full or in part
          during any Due Period, which Principal Prepayment was applied to such
          Mortgage Loan prior to such Mortgage Loan's Due Date in such Due
          Period, the amount of interest (net of the related Servicing Fee for
          Principal Prepayments in full only) that would have accrued on the
          amount of such Principal Prepayment during the period commencing on
          the date as of which such Principal Prepayment was applied to such
          Mortgage Loan and ending on the day immediately preceding such Due
          Date, inclusive.

5.   A new definition of "Realized Loss" is added to Article I immediately
     following the definition of "Rating Agencies" to read as follows:

          Realized Loss: With respect to each Liquidated Mortgage Loan (as
          defined in the Trust Agreement), an amount equal to (i) the unpaid
          principal balance of such Mortgage Loan as of the date of liquidation,
          minus (ii) Liquidation Proceeds received, to the extent allocable to
          principal, net of amounts that are reimbursable therefrom to the
          Master Servicer or the Company with respect to such Mortgage Loan
          (other than Monthly Advances of principal) including expenses of
          liquidation.

6.   The parties acknowledge that the fourth paragraph of Section 2.02 (Books
     and Records; Transfers of Mortgage Loans) shall be inapplicable to this
     Agreement.


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7.   The parties acknowledge that Section 2.03 (Custodial Agreement; Delivery of
     Documents) shall be superceded by the provisions of the Custodial
     Agreement.

8.   Section 3.01(c) (No Conflicts) is hereby amended by deleting the words "the
     acquisition of the Mortgage Loans by the Company, the sale of the Mortgage
     Loans to the Purchaser".

9.   Section 3.01(f) (Ability to Perform) is hereby amended by deleting the
     second and third sentences thereof.

10.  Section 3.01(h) (No Consent Required) is hereby amended by deleting the
     words "or the sale of the Mortgage Loans".

11.  Section 3.01 (i) (Selection Process), Section 3.01(k) (Sale Treatment),
     Section 3.01(m) (No Brokers' Fees) and Section 3.01(n) (Fair Consideration)
     shall be inapplicable to this Agreement.

12.  Four new paragraphs are hereby added at the end of Section 3.03
     (Repurchase) to read as follows:

               It is understood and agreed that the representations and
          warranties set forth in Section 3.01 (a) through (h), (j) and (l) are
          hereby restated as of the Closing Date and shall survive the
          engagement of the Company to perform the servicing responsibilities
          hereunder and the delivery of the Servicing Files to the Company and
          shall inure to the benefit of the Trustee, the Trust Fund and the
          Master Servicer. Upon discovery by either the Company, the Master
          Servicer or the Trustee of a breach of any of the foregoing
          representations and warranties which materially and adversely affects
          the ability of the Company to perform its duties and obligations under
          this Agreement or otherwise materially and adversely affects the value
          of the Mortgage Loans, the Mortgaged Property or the priority of the
          security interest on such Mortgaged Property or the interest of the
          Trustee or the Trust Fund, the party discovering such breach shall
          give prompt written notice to the other.

               Within 60 days of the earlier of either discovery by or notice to
          the Company of any breach of a representation or warranty set forth in
          Section 3.01 which materially and adversely affects the ability of the
          Company to perform its duties and obligations under this Agreement or
          otherwise materially and adversely affects the value of the Loans, the
          Mortgaged Property or the priority of the security interest on such
          Mortgaged Property, the Company shall use its best efforts promptly to
          cure such breach in all material respects and, if such breach cannot
          be cured, the Company shall, at the Trustee's option, assign the
          Company's rights and obligations under this Agreement (or respecting
          the affected Loans) to a successor servicer selected by the Trustee
          with the prior consent and approval of the Master Servicer. Such
          assignment shall be made in accordance with Section 12.01.

               In addition, the Company shall indemnify (from its own funds) the
          Trustee, the Trust Fund and Master Servicer and hold each of them
          harmless against any costs resulting from any claim, demand, defense
          or assertion based on or grounded upon, or resulting from, a breach of
          the Company's representations and warranties contained in this
          Agreement. It is understood and agreed that the remedies set forth in
          this Section 3.01 constitute the sole remedies of the Master Servicer,
          the Trust Fund and the Trustee respecting a breach of the foregoing
          representations and warranties.


                                       A-2



               Any cause of action against the Company relating to or arising
          out of the breach of any representations and warranties made in
          Section 3.01 shall accrue upon (i) discovery of such breach by the
          Company or notice thereof by the Trustee or Master Servicer to the
          Company, (ii) failure by the Company to cure such breach within the
          applicable cure period, and (iii) demand upon the Company by the
          Trustee or the Master Servicer for compliance with this Agreement.

13.  Section 4.01 (Company to Act as Servicer) is hereby amended as follows:

(i) by deleting the first, second and third sentences of the second paragraph of
such section and replacing it with the following:

               Consistent with the terms of this Agreement, the Company may
          waive, modify or vary any term of any Mortgage Loan or consent to the
          postponement of any such term or in any manner grant indulgence to any
          Mortgagor if in the Company's reasonable and prudent determination
          such waiver, modification, postponement or indulgence is not
          materially adverse to the Purchaser, provided, however, that unless
          the Mortgagor is in default with respect to the Mortgage Loan or such
          default is, in the judgment of the Company, imminent, the Company
          shall not permit any modification with respect to any Mortgage Loan
          that would change the Mortgage Interest Rate, forgive the payment of
          principal or interest, reduce or increase the outstanding principal
          balance (except for actual payments of principal) or change the final
          maturity date on such Mortgage Loan.

(ii) by adding the following to the end of the second paragraph of such section:

          Promptly after the execution of any assumption, modification,
          consolidation or extension of any Mortgage Loan, the Company shall
          forward to the Master Servicer copies of any documents evidencing such
          assumption, modification, consolidation or extension. Notwithstanding
          anything to the contrary contained in this Agreement, the Company
          shall not make or permit any modification, waiver or amendment of any
          term of any Mortgage Loan that would cause any REMIC created under the
          Trust Agreement to fail to qualify as a REMIC or result in the
          imposition of any tax under Section 860F(a) or Section 860G(d) of the
          Code.

14.  Section 4.04 (Establishment of and Deposits to Custodial Account) is hereby
     amended as follows:

(a) the words "in trust for the Purchaser and/or subsequent purchasers of
Mortgage Loans, and various Mortgagors-P&I" in the fourth and fifth lines of the
first sentence of the first paragraph shall be replaced by the following: "in
trust for SASCO 2005-11H Trust Fund and various Mortgagors".

(b) by amending clause (viii) to read as follows:

               (viii) the amount of any Prepayment Interest Shortfall Amount
                    paid out of the Company's own funds without any right to
                    reimbursement therefor;

15.  Section 4.05 (Permitted Withdrawals From Custodial Account) is hereby
     amended by replacing the last five lines of clause (ii) with the following:

               the Trust Fund; provided however, that in the event that the
          Company determines in good faith that any unreimbursed Monthly
          Advances will not be recoverable from amounts representing late
          recoveries of payments of principal or interest respecting the


                                      A-3



          particular Mortgage Loan as to which such Monthly Advance was made or
          from Liquidation Proceeds or Insurance Proceeds with respect to such
          Mortgage Loan, the Company may reimburse itself for such amounts from
          the Custodial Account, it being understood, in the case of any such
          reimbursement, that the Company's right thereto shall be prior to the
          rights of the Trust Fund;

16.  Section 4.06 (Establishment of and Deposits to Escrow Account) shall be
     amended by deleting the words "Purchaser and/or subsequent purchasers of
     Residential Mortgage Loans, and various Mortgagors-T&I" in the fourth and
     fifth lines of the first sentence of the first paragraph, and replacing it
     with the following:

          "in trust for SASCO 2005-11H Trust Fund and various Mortgagors".

17.  Section 4.16 (Title, Management and Disposition of REO Property) is hereby
     amended by (i) adding two new paragraphs after the fourth paragraph thereof
     to read as follows:

          In the event that the Trust Fund acquires any REO Property in
          connection with a default or imminent default on a Mortgage Loan, the
          Company shall dispose of such REO Property not later than the end of
          the third taxable year after the year of its acquisition by the Trust
          Fund unless the Company has applied for and received a grant of
          extension from the Internal Revenue Service to the effect that, under
          the REMIC Provisions and any relevant proposed legislation and under
          applicable state law, the applicable Trust REMIC may hold REO Property
          for a longer period without adversely affecting the REMIC status of
          such REMIC or causing the imposition of a federal or state tax upon
          such REMIC. If the Company has received such an extension, then the
          Company shall continue to attempt to sell the REO Property for its
          fair market value for such period longer than three years as such
          extension permits (the "Extended Period"). If the Company has not
          received such an extension and the Company is unable to sell the REO
          Property within the period ending 3 months before the end of such
          third taxable year after its acquisition by the Trust Fund or if the
          Company has received such an extension, and the Company is unable to
          sell the REO Property within the period ending three months before the
          close of the Extended Period, the Company shall, before the end of the
          three year period or the Extended Period, as applicable, (i) purchase
          such REO Property at a price equal to the REO Property's fair market
          value or (ii) auction the REO Property to the highest bidder (which
          may be the Company) in an auction reasonably designed to produce a
          fair price prior to the expiration of the three-year period or the
          Extended Period, as the case may be. The Trustee shall sign any
          document or take any other action reasonably requested by the Company
          which would enable the Company, on behalf of the Trust Fund, to
          request such grant of extension.

          Notwithstanding any other provisions of this Agreement, no REO
          Property acquired by the Trust Fund shall be rented (or allowed to
          continue to be rented) or otherwise used by or on behalf of the Trust
          Fund in such a manner or pursuant to any terms that would: (i) cause
          such REO Property to fail to qualify as "foreclosure property" within
          the meaning of Section 860G(a)(8) of the Code; or (ii) subject any
          Trust REMIC to the imposition of any federal income taxes on the
          income earned from such REO Property, including any taxes imposed by
          reason of Sections 860F or 860G(c) of the Code, unless the Company has
          agreed to indemnify and hold harmless the Trust Fund with respect to
          the imposition of any such taxes.

     (ii) replacing the word "advances" in the sixth line of the fifth paragraph
          thereof with "Monthly


                                      A-4



     Advances" and (iii) by adding the following to the end of such Section:

          Prior to acceptance by the Company of an offer to sell any REO
          Property, the Company shall notify the Master Servicer of such offer
          in writing which notification shall set forth all material terms of
          said offer (each a "Notice of Sale"). The Master Servicer shall be
          deemed to have approved the sale of any REO Property unless the Master
          Servicer notifies the Company in writing, within five (5) days after
          its receipt of the related Notice of Sale, that it disapproves of the
          related sale, in which case the Company shall not proceed with such
          sale.

18.  A new Section 4.24 is hereby added to read as follows:

     Section 4.24 Waiver of Prepayment Charges.

     The Servicer or any designee of the Servicer shall not waive any Prepayment
Charge with respect to any Mortgage Loan. If the Servicer or its designee fails
to collect a Prepayment Charge at the time of the related prepayment of any
Mortgage Loan subject to such Prepayment Charge, the Servicer shall pay to the
Purchaser at such time (by deposit to the Custodial Account) an amount equal to
the amount of the Prepayment Charge not collected. Notwithstanding the above,
the Servicer or its designee may waive a Prepayment Charge without paying to the
Purchaser the amount of such Prepayment Charge only if the related prepayment is
not the result of a refinancing by the Servicer or its designee and such waiver
(i) relates to a defaulted Mortgage Loan or a reasonably foreseeable default,
such waiver is standard and customary in servicing similar mortgage loans to the
Mortgage Loans, and such waiver, in the reasonable judgment of the Servicer,
would maximize recovery of total proceeds from the Mortgage Loan, taking into
account the amount of such Prepayment Charge and the related Mortgage Loan, or
(ii) relates to a Prepayment Charge the collection of which, in the reasonable
judgment of the Servicer, would be a violation of applicable laws.

19.  Section 5.01 (Remittances) is hereby amended by replacing the word "second"
     with the word "first" in the second paragraph of such Section, and is
     further amended by adding the following after the second paragraph of such
     Section:

               All remittances required to be made to the Master Servicer shall
          be made to the following wire account or to such other account as may
          be specified by the Master Servicer from time to time:

               JPMorgan Chase Bank, N.A.
               New York, New York
               ABA #: 021-000-021
               Account Name: Aurora Loan Services LLC
               Master Servicing Payment Clearing Account
               Account Number: 066-611059
               Beneficiary: Aurora Loan Services LLC
               For further credit to: Aurora Loan Services 2005-11H

20.  Section 5.02 (Statements to Purchaser) is hereby amended in its entirety to
     read as follows:

          Section 5.02 Statements to Master Servicer.


                                       A-5



               No later than 30 days upon request, the Company shall deliver or
          cause to be delivered to the Master Servicer executed copies of the
          custodial and escrow account certifications or letter agreements
          pursuant to Sections 4.04 and 4.06.

               Not later than the tenth calendar day of each month, the Company
          shall furnish to the Master Servicer an electronic file providing loan
          level accounting data for the period ending on the last Business Day
          of the preceding month in the format set forth in Exhibits D-1 and D-2
          hereto (or in such other format mutually agreed to between the Company
          and the Master Servicer). The information required by Exhibit D-2 is
          limited to that which is readily available to the Company and is
          mutually agreed to by the Company and Master Servicer.

21.  Section 5.03 (Monthly Advances by Company) is hereby amended by deleting
     the last sentence of such Section.

22.  Section 6.04 (Annual Statements as to Compliance) is hereby amended by
     replacing the words "the Purchaser" in the first line with the words
     "Lehman Brothers Holdings Inc. and the Master Servicer".

23.  Section 6.05 (Annual Independent Public Accountants' Servicing Report) is
     hereby amended by replacing the words "each Purchaser" in the third line
     with the words "Lehman Brothers Holdings Inc. and the Master Servicer."

24.  Section 8.01 (Indemnification; Third Party Claims) is hereby amended in its
     entirety to read as follows:

          The Company shall indemnify the Purchaser, the Trust Fund, the Trustee
          and the Master Servicer and hold each of them harmless against any and
          all claims, losses, damages, penalties, fines, forfeitures, reasonable
          and necessary legal fees and related costs, judgments, and any other
          costs, fees and expenses that any of such parties may sustain in any
          way related to the failure of the Company to perform its duties and
          service the Mortgage Loans in strict compliance with the terms of this
          Agreement. The Company immediately shall notify the Purchaser, the
          Master Servicer and the Trustee or any other relevant party if a claim
          is made by a third party with respect to this Agreement or the
          Mortgage Loans, assume (with the prior written consent of the
          indemnified party, which consent shall not be unreasonably withheld or
          delayed) the defense of any such claim and pay all expenses in
          connection therewith, including counsel fees, and promptly pay,
          discharge and satisfy any judgment or decree which may be entered
          against it or any of such parties in respect of such claim. The
          Company shall follow any written instructions received from the
          Trustee in connection with such claim. The Company shall provide the
          Trustee with a written report of all expenses and advances incurred by
          the Company pursuant to this Section 8.01, and the Trustee from the
          assets of the Trust Fund promptly shall reimburse the Company for all
          amounts advanced by it pursuant to the preceding sentence except when
          the claim is in any way relates to the failure of the Company to
          service and administer the Mortgage Loans in strict compliance with
          the terms of this Agreement or the gross negligence, bad faith or
          willful misconduct of the Company.

25.  Section 10.01 (Events of Default) is hereby amended by:

(a) changing any reference to "Purchaser" to "Master Servicer"


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(b) changing the reference to "five (5) days" to "two (2) Business Days" in
clause (i); and

(c) amending subclause (vii) as follows: "the Company at any time is neither a
Fannie Mae or Freddie Mac approved servicer, and the Master Servicer has not
terminated the rights and obligations of the Company under this Agreement and
replaced the Company with a Fannie Mae or Freddie Mac approved servicer within
30 days of the absence of such approval; or".

26.  Section 10.02 (Waiver of Defaults) is hereby amended by changing the
     reference to "Purchaser" to "Master Servicer with the prior written consent
     of the Trustee".

27.  Section 11.01 (Termination) is hereby amended by restating subclause (ii)
     thereof to read as below and adding the following sentence after the first
     sentence of this Section 11.01:

          (ii) mutual consent of the Company and the Trustee in writing,
               provided such termination is also acceptable to the Master
               Servicer and the Rating Agencies.

               At the time of any termination of the Company pursuant to Section
          11.01, the Company shall be entitled to all accrued and unpaid
          Servicing Fees and unreimbursed Servicing Advances and Monthly
          Advances; provided, however, in the event of a termination for cause
          under Section 10.01 hereof, such unreimbursed amounts shall not be
          reimbursed to the Company until such amounts are received by the Trust
          Fund from the related Mortgage Loans.

28.  Section 11.02 (Termination Without Cause) is hereby amended by replacing
     the first reference to "The Purchaser" with "Lehman Brothers Holdings (with
     the prior consent of the Trustee)" and by replacing all other references to
     "the Purchaser" with "Lehman Brothers Holdings."

29.  Section 12.01 (Successor to Company) is hereby amended in its entirety to
     read as follows:

               Simultaneously with the termination of the Company's
          responsibilities and duties under this Agreement pursuant to Sections
          8.04, 10.01, 11.01(ii) or 11.02, the Master Servicer shall, in
          accordance with the provisions of the Trust Agreement (i) succeed to
          and assume all of the Company's responsibilities, rights, duties and
          obligations under this Agreement, or (ii) appoint a successor meeting
          the eligibility requirements of this Agreement, and which shall
          succeed to all rights and assume all of the responsibilities, duties
          and liabilities of the Company under this Agreement with the
          termination of the Company's responsibilities, duties and liabilities
          under this Agreement. Any successor to the Company that is not at that
          time a servicer of other mortgage loans for the Trust Fund shall be
          subject to the approval of the Master Servicer, the Purchaser, the
          Trustee and each Rating Agency (as such term is defined in the Trust
          Agreement). Unless the successor servicer is at that time a servicer
          of other mortgage loans for the Trust Fund, each Rating Agency must
          deliver to the Trustee a letter to the effect that such transfer of
          servicing will not result in a qualification, withdrawal or downgrade
          of the then-current rating of any of the Certificates. In connection
          with such appointment and assumption, the Master Servicer or the
          Purchaser, as applicable, may make such arrangements for the
          compensation of such successor out of payments on the Mortgage Loans
          as it and such successor shall agree; provided, however, that no such
          compensation shall be in excess of that permitted the Company under
          this Agreement. In the event that the Company's duties,
          responsibilities and liabilities under this Agreement should be
          terminated pursuant to the aforementioned sections, the Company shall
          discharge such duties and


                                      A-7



          responsibilities during the period from the date it acquires knowledge
          of such termination until the effective date thereof with the same
          degree of diligence and prudence which it is obligated to exercise
          under this Agreement, and shall take no action whatsoever that might
          impair or prejudice the rights or financial condition of its
          successor. The resignation or removal of the Company pursuant to the
          aforementioned sections shall not become effective until a successor
          shall be appointed pursuant to this Section 12.01 and shall in no
          event relieve the Company of the representations and warranties made
          pursuant to Sections 3.01 and 3.02 and the remedies available to the
          Trust Fund under Section 3.03 shall be applicable to the Company
          notwithstanding any such resignation or termination of the Company, or
          the termination of this Agreement.

               Within a reasonable period of time, but in no event longer than
          30 days of the appointment of a successor entity, the Company shall
          prepare, execute and deliver to the successor entity any and all
          documents and other instruments, place in such successor's possession
          all Servicing Files, and do or cause to be done all other acts or
          things necessary or appropriate to effect the purposes of such notice
          of termination. The Company shall cooperate with the Trustee and the
          Master Servicer, as applicable, and such successor in effecting the
          termination of the Company's responsibilities and rights hereunder and
          the transfer of servicing responsibilities to the successor servicer,
          including without limitation, the transfer to such successor for
          administration by it of all cash amounts which shall at the time be
          credited by the Company to the Account or any Escrow Account or
          thereafter received with respect to the Mortgage Loans.

               Any successor appointed as provided herein shall execute,
          acknowledge and deliver to the Trustee, the Company and the Master
          Servicer an instrument accepting such appointment, wherein the
          successor shall make an assumption of the due and punctual performance
          and observance of each covenant and condition to be performed and
          observed by the Company under this Agreement, whereupon such successor
          shall become fully vested with all the rights, powers, duties,
          responsibilities, obligations and liabilities of the Company, with
          like effect as if originally named as a party to this Agreement. Any
          termination or resignation of the Company or termination of this
          Agreement pursuant to Sections 8.04, 10.01, 11.01 or 11.02 shall not
          affect any claims that the Master Servicer or the Trustee may have
          against the Company arising out of the Company's actions or failure to
          act prior to any such termination or resignation.

               The Company shall deliver, within three (3) Business Days of the
          appointment of a successor Servicer, the funds in the Custodial
          Account and Escrow Account and all Collateral Files, Credit Files and
          related documents and statements held by it hereunder to the successor
          Servicer and the Company shall account for all funds and shall execute
          and deliver such instruments and do such other things as may
          reasonably be required to more fully and definitively vest in the
          successor all such rights, powers, duties, responsibilities,
          obligations and liabilities of the Company.

               Upon a successor's acceptance of appointment as such, the Company
          shall notify the Trustee and Master Servicer of such appointment in
          accordance with the notice procedures set forth herein.

               Except as otherwise provided in this Agreement, all reasonable
          costs and expenses incurred in connection with any transfer of
          servicing hereunder (whether as a result of termination or removal of
          the Company or resignation of the Company or otherwise), including,
          without limitation, the costs and expenses of the Master Servicer or


                                      A-8



          any other Person in appointing a successor servicer, or of the Master
          Servicer in assuming the responsibilities of the Company hereunder, or
          of transferring the Servicing Files and the other necessary data to
          the successor servicer shall be paid by the terminated, removed or
          resigning Servicer from its own funds without reimbursement.

30.  Section 12.02 (Amendment) is hereby amended and restated in its entirety as
     follows:

          Section 12.02 Amendment.

               This Agreement may be amended from time to time by written
          agreement signed by the Company and the Purchaser, with the written
          consent of the Master Servicer and the Trustee.

31.  Section 12.04 (Duration of Agreement) is hereby amended by deleting the
     last sentence thereof.

32.  Section 12.10 (Assignment by Purchaser) is hereby deleted in its entirety.

33.  Section 12.11 (Solicitation of Mortgagor) is hereby amended by replacing
     the words "the Purchaser" with "Lehman Brothers Holdings" in each instance.

34.  A new Section 12.12 (Intended Third Party Beneficiaries) is hereby added to
     read as follows:

               Notwithstanding any provision herein to the contrary, the parties
          to this Agreement agree that it is appropriate, in furtherance of the
          intent of such parties as set forth herein, that the Master Servicer
          and the Trustee receive the benefit of the provisions of this
          Agreement as intended third party beneficiaries of this Agreement to
          the extent of such provisions. The Company shall have the same
          obligations to the Master Servicer and the Trustee as if they were
          parties to this Agreement, and the Master Servicer and the Trustee
          shall have the same rights and remedies to enforce the provisions of
          this Agreement as if they were parties to this Agreement. The Company
          shall only take direction from the Master Servicer (if direction by
          the Master Servicer is required under this Agreement) unless otherwise
          directed by this Agreement. Notwithstanding the foregoing, all rights
          and obligations of the Master Servicer and the Trustee hereunder
          (other than the right to indemnification) shall terminate upon
          termination of the Trust Agreement and of the Trust Fund pursuant to
          the Trust Agreement.

35.  A new Section 12.13 (Officer's Certificate) is hereby added to read as
     follows:

               On or before the last day of February of each year, beginning
          with February 28, 2006, or in connection with any additional
          Sarbanes-Oxley Certification required to be filed, upon thirty days
          written request the Company, at its own expense, will deliver to the
          Master Servicer a Servicing Officer's Certificate, a form of which is
          attached hereto as Exhibit E.

1.


                                      A-9



                                    EXHIBIT B

                   Seller's Warranties and Servicing Agreement

                               (See Exhibit 99.8)


                                      B-1



                                    EXHIBIT C

                       Schedule of Serviced Mortgage Loans





                             [INTENTIONALLY OMITTED]



                                      C-1



                                   EXHIBIT D-1

                        FORM OF MONTHLY REMITTANCE ADVICE

<TABLE>

FIELD NAME    DESCRIPTION                                                FORMAT
----------    -----------                                                ------

INVNUM        INVESTOR LOAN NUMBER                                       Number no decimals
SERVNUM       SERVICER LOAN NUMBER, REQUIRED                             Number no decimals
BEGSCHEDBAL   BEGINNING SCHEDULED BALANCE FOR SCHED/SCHED                Number two decimals
              BEGINNING TRAIL BALANCE FOR ACTUAL/ACTUAL,
              REQUIRED
SCHEDPRIN     SCHEDULED PRINCIPAL AMOUNT FOR SCHEDULED/SCHEDULED         Number two decimals
              ACTUAL PRINCIPAL COLLECTED FOR ACTUAL/ACTUAL,
              REQUIRED, .00 IF NO COLLECTIONS
CURT1         CURTAILMENT 1 AMOUNT, .00 IF NOT APPLICABLE                Number two decimals
CURT1DATE     CURTAILMENT 1 DATE, BLANK IF NOT APPLICABLE                DD-MMM-YY
CURT1ADJ      CURTAILMENT 1 ADJUSTMENT, .00 IF NOT APPLICABLE            Number two decimals
CURT2         CURTAILMENT 2 AMOUNT, .00 IF NOT APPLICABLE                Number two decimals
CURT2DATE     CURTAILMENT 2 DATE, BLANK IF NOT APPLICABLE                DD-MMM-YY
CURT2ADJ      CURTAILMENT 2 ADJUSTMENT, .00 IF NOT APPLICABLE            Number two decimals
LIQPRIN       PAYOFF, LIQUIDATION PRINCIPAL, .00 IF NOT APPLICABLE       Number two decimals
OTHPRIN       OTHER PRINCIPAL, .00 IF NOT APPLICABLE                     Number two decimals
PRINREMIT     TOTAL PRINCIPAL REMITTANCE AMOUNT, .00 IF NOT APPLICABLE   Number two decimals
INTREMIT      NET INTEREST REMIT, INCLUDE PAYOFF INTEREST,               Number two decimals
              .00 IF NOT APPLICABLE
TOTREMIT      TOTAL REMITTANCE AMOUNT, .00 IF NOT APPLICABLE             Number two decimals
ENDSCHEDBAL   ENDING SCHEDULED BALANCE FOR SCHEDULED/SCHEDULED           Number two decimals
              ENDING TRIAL BALANCE FOR ACTUAL/ACTUAL
              .00 IF PAIDOFF, LIQUIDATED OR FULL CHARGEOFF
ENDACTBAL     ENDING TRIAL BALANCE                                       Number two decimals
              .00 IF PAIDOFF, LIQUIDATED OR FULL CHARGEOFF
ENDDUEDATE    ENDING ACTUAL DUE DATE, NOT LAST PAID INSTALLMENT          DD-MMM-YY
ACTCODE       60 IF PAIDOFF, BLANK IF NOT APPLICABLE                     Number no decimals
ACTDATE       ACTUAL PAYOFF DATE, BLANK IF NOT APPLICABLE                DD-MMM-YY
INTRATE       INTEREST RATE, REQUIRED                                    Number seven decimals

                                            Example .0700000 for 7.00%
                                            Example .0025000 for  .25%
</TABLE>


                                      D-1-1



<TABLE>

SFRATE        SERVICE FEE RATE, REQUIRED                                 Number seven decimals
                                            Example .0025000 for  .25%
PTRATE        PASS THRU RATE, REQUIRED                                   Number seven decimals
                                            Example .0675000 for 6.75%
PIPMT         P&I CONSTANT, REQUIRED                                     Number two decimals
              .00 IF PAIDOFF
</TABLE>


                                      D-1-2



                                   EXHIBIT D-2

                STANDARD LAYOUT FOR MONTHLY DEFAULTED LOAN REPORT

<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

% of MI coverage               NUMBER(6,5)                                                     The percent of coverage provided by
                                                                                               the PMI company in the event of loss
                                                                                               on a defaulted loan.
------------------------------------------------------------------------------------------------------------------------------------
Actual MI claim filed date     DATE(MM/DD/YYYY)                                                Actual date that the claim was
                                                                                               submitted to the PMI company.
------------------------------------------------------------------------------------------------------------------------------------
Actual bankruptcy start date   DATE(MM/DD/YYYY)                                                Actual date that the bankruptcy
                                                                                               petition is filed with the court.
------------------------------------------------------------------------------------------------------------------------------------
Actual MI claim amount filed   NUMBER(15,2)                                                    The amount of the claim that was
                                                                                               filed by the servicer with the PMI
                                                                                               company.
------------------------------------------------------------------------------------------------------------------------------------
Actual discharge date          DATE(MM/DD/YYYY)                                                Actual date that the Discharge Order
                                                                                               is entered in the bankruptcy docket.
------------------------------------------------------------------------------------------------------------------------------------
Actual due date                DATE(MM/DD/YYYY)                                                Actual due date of the next
                                                                                               outstanding payment amount due from
                                                                                               the mortgagor.
------------------------------------------------------------------------------------------------------------------------------------
Actual eviction complete date  DATE(MM/DD/YYYY)                                                Actual date that the eviction
                                                                                               proceedings are completed by local
                                                                                               counsel.
------------------------------------------------------------------------------------------------------------------------------------
Actual eviction start date     DATE(MM/DD/YYYY)                                                Actual date that the eviction
                                                                                               proceedings are commenced by local
                                                                                               counsel.
------------------------------------------------------------------------------------------------------------------------------------
Actual first legal date        DATE(MM/DD/YYYY)                                                Actual date that foreclosure counsel
                                                                                               filed the first legal action as
                                                                                               defined by state statute.
------------------------------------------------------------------------------------------------------------------------------------
Actual redemption end date     DATE(MM/DD/YYYY)                                                Actual date that the foreclosure
                                                                                               redemption period expires.
------------------------------------------------------------------------------------------------------------------------------------
Bankruptcy chapter             VARCHAR2(2)       7= Chapter 7 filed    11=  Chapter 11 filed   Chapter of bankruptcy filed.
                                                 12= Chapter 12 filed  13= Chapter 13 filed
------------------------------------------------------------------------------------------------------------------------------------
Bankruptcy flag                VARCHAR2(2)       Y=Active Bankruptcy   N=No Active Bankruptcy  Servicer defined indicator that
                                                                                               identifies that the property is an
                                                                                               asset in an active bankruptcy case.
------------------------------------------------------------------------------------------------------------------------------------
Bankruptcy Case Number         VARCHAR2(15)                                                    The court assigned case number of the
                                                                                               bankruptcy filed by a party with
                                                                                               interest in the property.
------------------------------------------------------------------------------------------------------------------------------------
MI claim amount paid           NUMBER(15,2)                                                    The amount paid to the servicer by
                                                                                               the PMI company as a result of
                                                                                               submitting an MI claim.
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-1



<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

MI claim funds received date   DATE(MM/DD/YYYY)                                                Actual date that funds were received
                                                                                               from the PMI company as a result of
                                                                                               transmitting an MI claim.
------------------------------------------------------------------------------------------------------------------------------------
Current loan amount            NUMBER(10,2)                                                    Current unpaid principal balance of
                                                                                               the loan as of the date of reporting
                                                                                               to Aurora Master Servicing.
------------------------------------------------------------------------------------------------------------------------------------
Date FC sale scheduled         DATE(MM/DD/YYYY)                                                Date that the foreclosure sale is
                                                                                               scheduled to be held.
------------------------------------------------------------------------------------------------------------------------------------
Date relief/dismissal granted  DATE(MM/DD/YYYY)                                                Actual date that the dismissal or
                                                                                               relief from stay order is entered by
                                                                                               the bankruptcy court.
------------------------------------------------------------------------------------------------------------------------------------
Date REO offer accepted        DATE(MM/DD/YYYY)                                                Actual date of acceptance of an REO
                                                                                               offer.
------------------------------------------------------------------------------------------------------------------------------------
Date REO offer received        DATE(MM/DD/YYYY)                                                Actual date of receipt of an REO
                                                                                               offer.
------------------------------------------------------------------------------------------------------------------------------------
Delinquency value              NUMBER(10,2)                                                    Value obtained typically from a BPO
                                                                                               prior to foreclosure referral not
                                                                                               related to loss mitigation activity.
------------------------------------------------------------------------------------------------------------------------------------
Delinquency value source       VARCHAR2(15)      BPO= Broker's Price   Appraisal=Appraisal     Name of vendor or management company
                                                      Opinion                                  that provided the delinquency
                                                                                               valuation amount.
------------------------------------------------------------------------------------------------------------------------------------
Delinquency value date         DATE(MM/DD/YYYY)                                                Date that the delinquency valuation
                                                                                               amount was completed by vendor or
                                                                                               property management company.
------------------------------------------------------------------------------------------------------------------------------------
Delinquency flag               VARCHAR2(2)       Y= 90+ delinq. Not in FC, Bky or Loss mit     Servicer defined indicator that
                                                 N=Less than 90 days delinquent                identifies that the loan is
                                                                                               delinquent but is not involved in
                                                                                               loss mitigation, foreclosure,
                                                                                               bankruptcy or REO.
------------------------------------------------------------------------------------------------------------------------------------
Foreclosure flag               VARCHAR2(2)       Y=Active foreclosure  N=No active             Servicer defined indicator that
                               foreclosure                                                     identifies that the loan is involved
                                                                                               in foreclosure proceedings.
------------------------------------------------------------------------------------------------------------------------------------
Corporate expense balance      NUMBER(10,2)                                                    Total of all cumulative expenses
                                                                                               advanced by the servicer for
                                                                                               non-escrow expenses such as but not
                                                                                               limited to: FC fees and costs,
                                                                                               bankruptcy fees and costs, property
                                                                                               preservation and property
                                                                                               inspections.
------------------------------------------------------------------------------------------------------------------------------------
Foreclosure attorney referral  DATE(MM/DD/YYYY)                                                Actual date that the loan was
date                                                                                           referred to local counsel to begin
                                                                                               foreclosure proceedings.
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-2



<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

Foreclosure valuation amount   NUMBER(15,2)                                                    Value obtained during the foreclosure
                                                                                               process. Usually as a result of a BPO
                                                                                               and typically used to calculate the
                                                                                               bid.
------------------------------------------------------------------------------------------------------------------------------------
Foreclosure valuation date     DATE(MM/DD/YYYY)                                                Date that foreclosure valuation
                                                                                               amount was completed by vendor or
                                                                                               property management company.
------------------------------------------------------------------------------------------------------------------------------------
Foreclosure valuation source   VARCHAR2(80)      BPO= Broker's Price   Appraisal=Appraisal     Name of vendor or management company
                                                      Opinion                                  that provided the foreclosure
                                                                                               valuation amount.
------------------------------------------------------------------------------------------------------------------------------------
FHA 27011A transmitted date    DATE(MM/DD/YYYY)                                                Actual date that the FHA 27011A claim
                                                                                               was submitted to HUD.
------------------------------------------------------------------------------------------------------------------------------------
FHA 27011 B transmitted date   DATE(MM/DD/YYYY)                                                Actual date that the FHA 27011B claim
                                                                                               was submitted to HUD.
------------------------------------------------------------------------------------------------------------------------------------
VA LGC/ FHA Case number       VARCHAR2(15)                                                     Number that is assigned individually
                                                                                               to the loan by either HUD or VA at
                                                                                               the time of origination. The number
                                                                                               is located on the Loan Guarantee
                                                                                               Certificate (LGC) or the Mortgage
                                                                                               Insurance Certificate (MIC).
------------------------------------------------------------------------------------------------------------------------------------
FHA Part A funds received      DATE(MM/DD/YYYY)                                                Actual date that funds were received
date                                                                                           from HUD as a result of transmitting
                                                                                               the 27011A claim.
------------------------------------------------------------------------------------------------------------------------------------
Foreclosure actual sale date   DATE(MM/DD/YYYY)                                                Actual date that the foreclosure sale
                                                                                               was held.
------------------------------------------------------------------------------------------------------------------------------------
Servicer loan number           VARCHAR2(15)                                                    Individual number that uniquely
                                                                                               identifies loan as defined by
                                                                                               servicer.
------------------------------------------------------------------------------------------------------------------------------------
Loan type                      VARCHAR2(2)       1=FHA Residential     2=VA Residential        Type of loan being serviced generally
                                                 3=Conventional w/o    4=Commercial            defined by the existence of certain
                                                   PMI                 6=Conventional w/PMI    types of insurance. (i.e.: FHA, VA,
                                                 5=FHA Project         8=Daily Simple          conventional insured, conventional
                                                 7=HUD 235/265           Interest Loan         uninsured, SBA, etc.)
                                                 9=Farm Loan           U=Unknown
                                                 S=Sub prime
------------------------------------------------------------------------------------------------------------------------------------
Loss mit approval date         DATE(MM/DD/YYYY)                                                The date determined that the servicer
                                                                                               and mortgagor agree to pursue a
                                                                                               defined loss mitigation alternative.
------------------------------------------------------------------------------------------------------------------------------------
Loss mit flag                  VARCHAR2(2)       Y= Active loss        N=No active loss        Servicer defined indicator that
                                                    mitigation              mitigation         identifies that the loan is involved
                                                                                               in completing a loss mitigation
                                                                                               alternative.
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-3



<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

Loss mit removal date          DATE(MM/DD/YYYY)                                                The date that the mortgagor is denied
                                                                                               loss mitigation alternatives or the
                                                                                               date that the loss mitigation
                                                                                               alternative is completed resulting in
                                                                                               a current or liquidated loan.
------------------------------------------------------------------------------------------------------------------------------------
Loss mit type                  VARCHAR2(2)       L=Loss Mitigation     LT=Litigation pending   The defined loss mitigation
                                                 NP=Pending            CH=Charge off           alternative identified on the loss
                                                    non-performing     FB=Forbearance plan     mit approval date.
                                                    sale               PC=Partial claim
                                                 DI=Deed in lieu       VA=VA refunding
                                                 MO=Modification
                                                 SH=Short sale
------------------------------------------------------------------------------------------------------------------------------------
Loss mit value                 NUMBER(10,2)                                                    Value obtained typically from a BPO
                                                                                               prior to foreclosure sale intended to
                                                                                               aid in the completion of loss
                                                                                               mitigation activity.
------------------------------------------------------------------------------------------------------------------------------------
Loss mit value date            DATE(MM/DD/YYYY)                                                Name of vendor or management company
                                                                                               that provided the loss mitigation
                                                                                               valuation amount.
------------------------------------------------------------------------------------------------------------------------------------
Loss mit value source          VARCHAR2(15)      BPO=Broker's Price    Appraisal=Appraisal     Date that the lost mitigation
                                                     Opinion                                   valuation amount was completed by
                                                                                               vendor or property management
                                                                                               company.
------------------------------------------------------------------------------------------------------------------------------------
MI certificate number          VARCHAR2(15)                                                    A number that is assigned
                                                                                               individually to the loan by the PMI
                                                                                               company at the time of origination.
                                                                                               Similar to the VA LGC/FHA Case Number
                                                                                               in purpose.
------------------------------------------------------------------------------------------------------------------------------------
LPMI Cost                      NUMBER(7,7)                                                     The current premium paid to the PMI
                                                                                               company for Lender Paid Mortgage
                                                                                               Insurance.
------------------------------------------------------------------------------------------------------------------------------------
Occupancy status               VARCHAR2(1)       O=Owner occupied      T=Tenant occupied       The most recent status of the
                                                 U=Unknown             V=Vacant                property regarding who if anyone is
                                                                                               occupying the property. Typically a
                                                                                               result of a routine property
                                                                                               inspection.
------------------------------------------------------------------------------------------------------------------------------------
First Vacancy date/ Occupancy  DATE(MM/DD/YYYY)                                                The date that the most recent
status date                                                                                    occupancy status was determined.
                                                                                               Typically the date of the most recent
                                                                                               property inspection.
------------------------------------------------------------------------------------------------------------------------------------
Original loan amount           NUMBER(10,2)                                                    Amount of the contractual obligations
                                                                                               (i.e.: note and mortgage/deed of
                                                                                               trust).
------------------------------------------------------------------------------------------------------------------------------------
Original value amount          NUMBER(10,2)                                                    Appraised value of property as of
                                                                                               origination typically determined
                                                                                               through the appraisal process.
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-4



<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

Origination date               DATE(MM/DD/YYYY)                                                Date that the contractual obligations
                                                                                               (i.e.: note and mortgage/deed of
                                                                                               trust) of the mortgagor was executed.
------------------------------------------------------------------------------------------------------------------------------------
FHA Part B funds received date DATE(MM/DD/YYYY)                                                Actual date that funds were received
                                                                                               fro HUD as a result of transmitting
                                                                                               the 27011B claim.
------------------------------------------------------------------------------------------------------------------------------------
Post petition due date         DATE(MM/DD/YYYY)                                                The post petition due date of a loan
                                                                                               involved in a chapter 13 bankruptcy.
------------------------------------------------------------------------------------------------------------------------------------
Property condition             VARCHAR2(2)       1=Excellent           2=Good                  Physical condition of the property as
                                                 3=Average             4=Fair                  most recently reported to the
                                                 5=Poor                6=Very poor             servicer by vendor or property
                                                                                               management company.
------------------------------------------------------------------------------------------------------------------------------------
Property type                  VARCHAR2(2)       1=Single family       2=Town house            Type of property secured by mortgage
                               3=Condo           4=Multifamily         5=Other                 such as: single family, 2-4 unit,
                               6=Prefabricated   B=Commercial          C=Land only             etc.
                               7=Mobile home     U=Unknown             D=Farm
                               A=Church          P=PUD                 R=Row house
                               O=Co-op           M=Manufactured        24=2-4 family
                                                   housing
                               CT=Condotel       MU=Mixed use
------------------------------------------------------------------------------------------------------------------------------------
Reason for default             VARCHAR2(3)  001=Death of principal   02=Illness of principal   Cause of delinquency as identified by
                                                mtgr                    mtgr                   mortgagor.
                                            003=Illness of mtgr's    005=Marital
                                                family member            difficulties
                                            004=Death of mtgr's      007=Excessive
                                                family member            obligation
                                            006=Curtailment of       009=Distant employee
                                                income                   transfer
                                            008=Abandonment of       012=Inability to sell
                                                property                 property
                                            011=Property problem     014=Military service
                                            013=Inability to rent    016=Unemployment
                                                property
                                            015=Other                019=Casualty loss
                                            017=Business failure     023=Servicing problems
                                            022=Energy-Environment   027=Payment dispute
                                                costs
                                            026=Payment adjustment   030=Fraud
                                            029=Transfer ownership   INC=Incarceration
                                                pending
                                            031=Unable to contact
                                                borrower
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-5



<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

REO repaired value             NUMBER(10,2)                                                    The projected value of the property
                                                                                               that is adjusted from the "as is"
                                                                                               value assuming necessary repairs have
                                                                                               been made to the property as
                                                                                               determined by the vendor/property
                                                                                               management company.
------------------------------------------------------------------------------------------------------------------------------------
REO list price adjustment      NUMBER(15,2)                                                    The most recent listing/pricing
amount                                                                                         amount as updated by the servicer for
                                                                                               REO properties.
------------------------------------------------------------------------------------------------------------------------------------
REO list price adjustment      DATE(MM/DD/YYYY)                                                The most recent date that the
date                                                                                           servicer advised the agent to make an
                                                                                               adjustment to the REO listing price.
------------------------------------------------------------------------------------------------------------------------------------
REO value (as is)              NUMBER(10,2)                                                    The value of the property without
                                                                                               making any repairs as determined by
                                                                                               the vendor/property management
                                                                                               company.
------------------------------------------------------------------------------------------------------------------------------------
REO actual closing date        DATE(MM/DD/YYYY)                                                The actual date that the sale of the
                                                                                               REO property closed escrow.
------------------------------------------------------------------------------------------------------------------------------------
REO flag                       VARCHAR2(7)       Y=Active REO          N=No active REO         Servicer defined indicator that
                                                                                               identifies that the property is now
                                                                                               Real Estate Owned.
------------------------------------------------------------------------------------------------------------------------------------
REO original list date         DATE(MM/DD/YYYY)                                                The initial/first date that the
                                                                                               property was listed with an agent as
                                                                                               an REO.
------------------------------------------------------------------------------------------------------------------------------------
REO original list price        NUMBER(15,2)                                                    The initial/first price that was used
                                                                                               to list the property with an agent as
                                                                                               an REO.
------------------------------------------------------------------------------------------------------------------------------------
REO net sales proceeds         NUMBER(10,2)                                                    The actual REO sales price less
                                                                                               closing costs paid. The net sales
                                                                                               proceeds are identified within the
                                                                                               HUD1 settlement statement.
------------------------------------------------------------------------------------------------------------------------------------
REO sales price                NUMBER(10,2)                                                    Actual sales price agreed upon by
                                                                                               both the purchaser and servicer as
                                                                                               documented on the HUD1 settlement
                                                                                               statement.
------------------------------------------------------------------------------------------------------------------------------------
REO scheduled close date       DATE(MM/DD/YYYY)                                                The date that the sale of the REO
                                                                                               property is scheduled to close
                                                                                               escrow.
------------------------------------------------------------------------------------------------------------------------------------
REO value date                 DATE(MM/DD/YYYY)                                                Date that the vendor or management
                                                                                               company completed the valuation of
                                                                                               the property resulting in the REO
                                                                                               value (as is).
------------------------------------------------------------------------------------------------------------------------------------
REO value source               VARCHAR2(15)      BPO=Broker's Price                            Name of vendor or management company
                                                      Opinion                                  that provided the REO value (as is).
                                                 Appraisal=Appraisal
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-6



<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

Repay first due date           DATE(MM/DD/YYYY)                                                The due date of the first scheduled
                                                                                               payment due under a forbearance or
                                                                                               repayment plan agreed to by both the
                                                                                               mortgagor and servicer.
------------------------------------------------------------------------------------------------------------------------------------
Repay next due date            DATE(MM/DD/YYYY)                                                The due date of the next outstanding
                                                                                               payment due under a forbearance or
                                                                                               repayment plan agreed to by both the
                                                                                               mortgagor and servicer.
------------------------------------------------------------------------------------------------------------------------------------
Repay plan                     DATE(MM/DD/YYYY)                                                The servicer defined date upon which
broken/reinstated/closed date                                                                  the servicer considers that the plan
                                                                                               is no longer in effect as a result of
                                                                                               plan completion or mortgagor's
                                                                                               failure to remit payments as
                                                                                               scheduled.
------------------------------------------------------------------------------------------------------------------------------------
Repay plan created date        DATE(MM/DD/YYYY)                                                The date that both the mortgagor and
                                                                                               servicer agree to the terms of a
                                                                                               forbearance or repayment plan.
------------------------------------------------------------------------------------------------------------------------------------
SBO loan number                NUMBER(9)                                                       Individual number that uniquely
                                                                                               identifies loan as defined by Aurora
                                                                                               Master Servicing.
------------------------------------------------------------------------------------------------------------------------------------
Escrow balance/advance         NUMBER(10,2)                                                    The positive or negative account
balance                                                                                        balance that is dedicated to payment
                                                                                               of hazard insurance, property taxes,
                                                                                               MI, etc. (escrow items only)
------------------------------------------------------------------------------------------------------------------------------------
Title approval letter          DATE(MM/DD/YYYY)                                                The actual date that the title
received date                                                                                  approval was received as set forth in
                                                                                               the HUD title approval letter.
------------------------------------------------------------------------------------------------------------------------------------
Title package HUD/VA date      DATE(MM/DD/YYYY)                                                The actual date that the title
                                                                                               package was submitted to either HUD
                                                                                               or VA.
------------------------------------------------------------------------------------------------------------------------------------
VA claim funds received date   DATE(MM/DD/YYYY)                                                The actual date that funds were
                                                                                               received by the servicer from the VA
                                                                                               for the expense claim submitted by
                                                                                               the servicer.
------------------------------------------------------------------------------------------------------------------------------------
VA claim submitted date        DATE(MM/DD/YYYY)                                                The actual date that the expense
                                                                                               claim was submitted by the servicer
                                                                                               to the VA.
------------------------------------------------------------------------------------------------------------------------------------
VA first funds received        NUMBER(15,2)                                                    The amount of funds received by the
amount                                                                                         servicer from VA as a result of the
                                                                                               specified bid.
------------------------------------------------------------------------------------------------------------------------------------
VA first funds received date   DATE(MM/DD/YYYY)                                                The date that the funds from the
                                                                                               specified bid were received by the
                                                                                               servicer from the VA.
------------------------------------------------------------------------------------------------------------------------------------
VA NOE submitted date          DATE(MM/DD/YYYY)                                                Actual date that the Notice of
                                                                                               Election to Convey was submitted to
                                                                                               the VA.
------------------------------------------------------------------------------------------------------------------------------------
Zip Code                       VARCHAR2(5)                                                     US postal zip code that corresponds
                                                                                               to property location.
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-7



<TABLE>

------------------------------------------------------------------------------------------------------------------------------------
DATA FIELD                     FORMAT                                                          DATA DESCRIPTION
------------------------------------------------------------------------------------------------------------------------------------

FNMA Delinquency status code   VARCHAR2(3)          09=Forbearance          17=Preforeclosure  The code that is electronically
                               24=Drug seizure      26=Refinance               sale            reported to FNMA by the servicer that
                               28=Modification      29=Charge-off           27=Assumption      reflects the current defaulted status
                               31=Probate           32=Military indulgence  30=Third-party     of a loan. (i.e.: 65, 67, 43 or 44)
                               44=Deed-in-lieu      49=Assignment              sale
                               62=VA no-bid         63=VA Refund            43=Foreclosure
                               65=Ch. 7 bankruptcy  66=Ch. 11 bankruptcy    61=Second lien
                                                                               considerations
                                                                            64=VA Buydown
                                                                            67=Ch.
                                                                               13 bankruptcy
------------------------------------------------------------------------------------------------------------------------------------
FNMA delinquency reason code   VARCHAR2(3) 001=Death of principal mtgr  002=Illness of         The code that is electronically
                                                                             principal mtgr    reported to FNMA by the servicer that
                               003=Illness of mtgr's family member  004=Death of mtgr's        describes the circumstance that
                               005=Marital difficulties                 family member          appears to be the primary
                               007=Excessive obligations            006=Curtailment of income  contributing factor to the
                               009=Distant employee transfer        008=Abandonment of         delinquency.
                               012=Inability to sell property           property
                               014=Military service                 011=Property problem
                               016=Unemployment                     013=Inability to rent
                               019=Casualty loss                        property
                               023=Servicing problems               015=Other
                               027=Payment dispute                  017=Business failure
                               030=Fraud                            022=Energy-Environment
                               INC=Incarceration                        costs
                                                                    026=Payment adjustment
                                                                    029=Transfer ownership
                                                                        pending
                                                                    031=Unable to contact
                                                                        borrower
------------------------------------------------------------------------------------------------------------------------------------
Suspense balance               NUMBER(10,2)                                                    Money submitted to the servicer,
                                                                                               credited to the mortgagor's account
                                                                                               but not allocated to principal,
                                                                                               interest, escrow, etc.
------------------------------------------------------------------------------------------------------------------------------------
Restricted escrow balance      NUMBER(10,2)                                                    Money held in escrow by the mortgage
                                                                                               company through completion of repairs
                                                                                               to property.
------------------------------------------------------------------------------------------------------------------------------------
Investor number                NUMBER (10,2)                                                   Unique number assigned to a group of
                                                                                               loans in the servicing system.
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                      D-2-8



                                    EXHIBIT E

                              ANNUAL CERTIFICATION

Re:  Structured Assets Securities Corporation, Mortgage Pass-Through
     Certificates, Series 2005-11H

I, John B. Brown, Vice President of Wells Fargo Bank, National Association (the
"Servicer"), certify to [identify the company submitting to SEC], and its
officers, directors, agents and affiliates (in its role as [identify role] the
"Sarbanes Certifying Party"), and with the knowledge and intent that they will
rely upon this certification, that:

1.   Based on my knowledge, the information relating to the Mortgage Loans and
     the servicing thereof submitted by the Servicer to the Sarbanes Certifying
     Party which is used in connection with preparation of the reports on Form
     8-K and the annual report on Form 10-K filed with the SEC with respect to
     each transaction listed on the attached Exhibit A, taken as a whole, does
     not contain any untrue statement of a material fact or omit to state a
     material fact necessary to make the statements made, in light of the
     circumstances under which such statements were made, not misleading as of
     the date of this certification;

2.   The servicing information required to be provided to the Sarbanes
     Certifying Party by the Servicer under the relevant servicing agreements
     has been provided to the Sarbanes Certifying Party;

3.   I am responsible for reviewing the activities performed by the Servicer
     under the relevant servicing agreements and based upon the review required
     by the relevant servicing agreements, and except as disclosed in the Annual
     Statement of Compliance, the Annual Independent Public Accountant's
     Servicing Report and all servicing reports, officer's certificates and
     other information relating to the servicing of the Mortgage Loans submitted
     to the Sarbanes Certifying Party, the Servicer has, as of the date of this
     certification fulfilled its obligations under the relevant servicing
     agreements; and

4.   I have disclosed to the Sarbanes Certifying Party all significant
     deficiencies relating to the Servicer's compliance with the minimum
     servicing standards in accordance with a review conducted in compliance
     with the Uniform Single Attestation Program for Mortgage Bankers or similar
     standard as set forth in the relevant servicing agreements.

5.   The Servicer shall indemnify and hold harmless the Sarbanes Certifying
     Party and its officers, directors, agents and affiliates from and against
     any losses, damages, penalties, fines, forfeitures, reasonable legal fees
     and related costs, judgments and other costs and expenses arising out of or
     based upon a breach by the Servicer or any of its officers, directors,
     agents or affiliates of its obligations under this Certification or the
     negligence, bad faith or willful misconduct of the Servicer in connection
     therewith. If the indemnification provided for herein is unavailable or
     insufficient to hold harmless the Sarbanes Certifying Party, then the
     Servicer agrees that it shall contribute to the amount paid or payable by
     the Sarbanes Certifying Party as a result of the losses, claims, damages or
     liabilities of the Sarbanes Certifying Party in such proportion as is
     appropriate to reflect the relative fault of the Sarbanes Certifying Party
     on the one hand and the Servicer on the other in connection with a breach
     of the Servicer's obligations under this Certification or the Servicer's
     negligence, bad faith or willful misconduct in connection therewith.


                                       E-1



     IN WITNESS WHEREOF, I have hereunto signed my name and affixed the seal of
the Servicer.


Dated:                                   By:
       -------------------------------       -----------------------------------
                                         Name:
                                               ---------------------------------
                                         Title:
                                                --------------------------------


                                       E-2



                                    Exhibit F

                       Assignment and Assumption Agreement

                             [INTENTIONALLY OMITTED]


                                       F-1