MORGAN STANLEY
                                  2002 - OP - 1
                             ADDITIONAL INFORMATION
                                   ALL RECORDS
                                  2,876 RECORDS
                              BALANCE: 413,409,421

                         SELECTION CRITERIA: ALL RECORDS
                                TABLE OF CONTENTS

1. Prepayment Penalty
2. Credit Grade

1. PREPAYMENT PENALTY



                                                                    % OF
                                                                  MORTGAGE
                                                                  POOL BY
                                                    AGGREGATE     AGGREGATE   WEIGHTED
                                          NUMBER     CUT-OFF       CUT-OFF     AVERAGE     WEIGHTED  WEIGHTED
                                            OF        DATE           DATE       GROSS      AVERAGE    AVERAGE
                                         MORTGAGE   PRINCIPAL     PRINCIPAL   INTEREST    REMAINING  ORIGINAL
PREPAYMENT PENALTY                         LOANS     BALANCE       BALANCE      RATE         TERM       LTV
-------------------------------------------------------------------------------------------------------------
                                                                                     
No Prepayment Penalty                        508    70,987,256      17.17       9.092        341       75.39
1 yr - 2% unpaid prin/orig balance             4       401,028        0.1       8.802        358       73.77
1 yr - 3 mo int->20% balance                   3       529,448       0.13       9.499        329        70.2
1 yr - 6 mo int->20% balance                  75    13,236,496        3.2       8.768        342       73.97
2 yr - 1% unpaid prin/orig balance            16     1,825,253       0.44      10.097        355       78.52
2 yr - 2% unpaid prin/orig balance             4       460,269       0.11       9.838        358       73.28
2 yr - 5%-4% balance                          16     1,705,114       0.41        9.34        357       78.54
2 yr - 3 mo int->20% balance                 140    28,983,984       7.01        8.69        358       78.23
2 yr - 6 mo int->20% balance               1,536   223,048,125      53.95       8.856        357       80.83
2.5 yr - 6 mo int->20% balance                 8     1,718,593       0.42       9.845        358       87.29
3 yr - 1% balance                             40     3,123,818       0.76       9.089        334       81.05
3 yr - 2% balance                             24     2,429,116       0.59       8.733        326       80.69
3 yr - 5%-4%-3% balance                       11     1,117,440       0.27       8.865        330       78.74
3 yr - 2 mo int->20% balance                   2       156,345       0.04       8.194        244       87.58
3 yr - 3 mo int->20% balance                  27     5,827,763       1.41       8.111        351       69.92
3 yr - 6 mo int->20% balance                 460    57,550,904      13.92       8.759        324       75.94
5 yr - 6 mo int->20% balance                   2       308,468       0.07       9.145        358          80
-------------------------------------------------------------------------------------------------------------
TOTAL:                                     2,876   413,409,421        100       8.873        349       78.63


2. CREDIT GRADE



                                                                    % OF
                                                                  MORTGAGE
                                                                  POOL BY
                                                    AGGREGATE     AGGREGATE   WEIGHTED
                                          NUMBER     CUT-OFF       CUT-OFF     AVERAGE     WEIGHTED  WEIGHTED
                                            OF        DATE           DATE       GROSS      AVERAGE    AVERAGE
                                         MORTGAGE   PRINCIPAL     PRINCIPAL   INTEREST    REMAINING  ORIGINAL
CREDIT GRADE                               LOANS     BALANCE       BALANCE      RATE         TERM       LTV
-------------------------------------------------------------------------------------------------------------
                                                                                     
A                                            449    59,454,019      14.38       9.475        349       78.11
AA                                         1,587   239,813,895      58.01       8.583        348        78.8
AA+                                          297    47,390,632      11.46       8.336        348        86.8
B                                            432    54,063,279      13.08       9.541        349       73.59
C                                             59     6,977,874       1.69      10.355        357       71.76
CC                                            52     5,709,722       1.38       11.09        357       65.42
-------------------------------------------------------------------------------------------------------------
TOTAL:                                     2,876   413,409,421        100       8.873        349       78.63