| DEAL NAME | MSM 2005-6AR |
| Closing Date | 10/31/2005 |
| |
| Initial Collateral Characteristics | |
| Principal Balance ($) | 1,094,048,381 |
| |
| Sellers (Over 10%) | Morgan Stanley Mortgage Capital Inc.(42.54%),Countrywide Home Loans, Inc.(21.03%) |
| |
| Servicers (Over 10%) | GMAC Mortgage Corporation(49.92%),Countrywide Home Loans Servicing LP(21.03%) |
| |
| Number of Loans | 3,250 |
| Avg Loan Balance ($) | 336,630 |
| |
| Fixed/Floating | |
| % FRM | 18.93 |
| % ARM | 81.07 |
| % Short Arm | 15.02 |
| % 3/1 or 3/6 | 14.57 |
| % 5/1 or 5/6 | 21.5 |
| % 7/1 or 7/6 | 3.41 |
| % 10/1 or 10/6 | 26.57 |
| |
| % IO | 87.47 |
| Wtd Avg IO Term (months) | 102 |
| |
| Wtd Avg Current Mortgage Rate (%) | 5.862 |
| < 4.00% | 0.99 |
| 4.0000% - 4.9999% | 5.65 |
| 5.0000% - 5.9999% | 49.62 |
| 6.0000% - 6.9999% | 40.35 |
| 7.0000% - 7.9999% | 3.18 |
| 8.0000% - 8.9999% | 0.21 |
| 9.0000% - 9.9999% | 0 |
| 10.0000% - 10.9999% | 0 |
| 11.000% + | 0 |
| |
| Non-Zero Wtd Avg Margin (%) | 2.362 |
| Non-Zero Wtd Avg Initial Cap (%) | 4.415 |
| Non-Zero Wtd Avg Periodic Cap (%) | 1.804 |
| |
| Lien Composition | |
| % 1st Lien | 100 |
| % 2nd Lien | 0 |
| |
| Non-Zero Wtd Avg FICO | 716 |
| % FICO below 660 (inc. N/A) | 10.31 |
| % FICO below 620 (inc. N/A) | 0.58 |
| |
| Wtd Avg Orig LTV | 73.58 |
| % LTV > 80 | 3.78 |
| % LTV > 90 | 1.6 |
| % LTV > 95 | 0.55 |
| |
| Documentation Level | |
| % Full/Alt Documentation | 26.36 |
| % Stated Documentation | 2.5 |
| % Limited Documentation | 53.52 |
| % No Documentation | 10.59 |
| % No Ratio Documentation | 5.75 |
| % Lite Documentation | 1.27 |
| |
| % Owner Occupied | 82.44 |
| % Investor | 11.86 |
| % Second Home | 5.7 |
| |
| Loan Purpose | |
| % Cashout Refinance | 31.46 |
| % Purchase | 56.82 |
| % Rate Term Refinance | 11.72 |
| |
| State Concentration (Over 5%) | CA(44.11%),FL(13.93%) |
| |
| % Prepay Penalty | 49.76 |
| |
| Wtd Avg Std Orig Term (months) | 360 |
| Wtd Avg Std Rem Term (months) | 357 |
| Wtd Average Loan Age (months) | 3 |
