Security Group 1 PSA Prepayment Assumption Rates Class YB Class YC Class Z Distribution Date 0% 100% 170% 260% 400% 0% 100% 170% 260% 400% 0% 100% 170% 260% 400% Initial Percent ..................    100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 October 2008....................    100 100 100 100 100 100 100 100 100 100 106 106 106 106 106 October 2009....................    100 100 100 100 0 100 100 100 100 50 112 112 112 112 112 October 2010....................    100 100 100 100 0 100 100 100 100 0 118 118 118 118 118 October 2011....................    100 100 100 100 0 100 100 100 100 0 125 125 125 125 125 October 2012....................    100 100 100 45 0 100 100 100 100 0 132 132 132 132 132 October 2013....................    100 100 100 0 0 100 100 100 57 0 139 139 139 139 139 October 2014....................    100 100 100 0 0 100 100 100 4 0 147 147 147 147 147 October 2015....................    100 100 100 0 0 100 100 100 0 0 155 155 155 155 155 October 2016....................    100 100 79 0 0 100 100 100 0 0 164 164 164 164 164 October 2017....................    100 100 51 0 0 100 100 100 0 0 173 173 173 173 173 October 2018....................    100 100 20 0 0 100 100 100 0 0 183 183 183 183 183 October 2019....................    100 100 0 0 0 100 100 79 0 0 193 193 193 193 193 October 2020....................    100 54 0 0 0 100 100 19 0 0 204 204 204 204 200 October 2021....................    100 0 0 0 0 100 41 0 0 0 216 216 216 216 145 October 2022....................    100 0 0 0 0 100 0 0 0 0 228 228 228 228 104 October 2023....................    100 0 0 0 0 100 0 0 0 0 241 241 241 241 74 October 2024....................    100 0 0 0 0 100 0 0 0 0 254 254 254 254 53 October 2025....................    100 0 0 0 0 100 0 0 0 0 269 269 269 243 37 October 2026....................    100 0 0 0 0 100 0 0 0 0 284 284 284 187 26 October 2027....................    100 0 0 0 0 100 0 0 0 0 300 300 300 141 17 October 2028....................    100 0 0 0 0 100 0 0 0 0 317 317 317 105 12 October 2029....................    100 0 0 0 0 100 0 0 0 0 334 334 294 75 8 October 2030....................    100 0 0 0 0 100 0 0 0 0 353 353 215 52 5 October 2031....................    100 0 0 0 0 100 0 0 0 0 373 373 147 33 3 October 2032....................    100 0 0 0 0 100 0 0 0 0 394 274 88 19 1 October 2033.................... 51 0 0 0 0 100 0 0 0 0 417 126 38 8 1 October 2034.................... 0 0 0 0 0 0 0 0 0 0 440 55 16 3 0 October 2035.................... 0 0 0 0 0 0 0 0 0 0 465 0 0 0 0 October 2036.................... 0 0 0 0 0 0 0 0 0 0 491 0 0 0 0 October 2037.................... 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Weighted Average Life (years)  ..................   26.0 13.1 10.0 5.0 1.9 26.3 14.0 12.5 6.2 2.0 29.7 25.7 24.0 20.8 15.9 Security Group 2 PSA Prepayment Assumption Rates Class A Classes FA, FH, FI, FJ, FX and QA Class FC 4.12% LIBOR Class FC 5.12% LIBOR Distribution Date 0% 100% 352% 550% 750% 0% 100% 352% 550% 750% 0% 100% 352% 550% 750% 0% 100% 352% 550% 750% Initial Percent ..................    100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 October 2008.................... 99 97 92 88 85 99 97 93 90 86 99 97 94 90 87 99 97 94 90 87 October 2009.................... 97 91 76 66 55 98 92 79 69 59 98 92 79 69 59 98 92 79 69 59 October 2010.................... 96 83 58 41 26 97 86 62 46 32 97 86 62 46 33 97 86 62 46 33 October 2011.................... 94 76 43 24 10 96 79 48 30 18 96 79 48 30 18 96 79 48 30 18 October 2012.................... 92 70 31 12 1 95 74 37 20 10 95 73 37 20 10 95 73 37 20 10 October 2013.................... 91 63 21 4 0 94 68 29 13 5 94 68 29 13 5 94 68 29 13 5 October 2014.................... 89 57 14 0 0 92 63 22 9 3 92 63 23 9 3 92 62 23 9 3 October 2015.................... 86 51 8 0 0 91 58 17 6 2 91 58 17 6 2 91 57 17 6 2 October 2016.................... 84 46 3 0 0 89 53 13 4 1 89 53 13 4 1 89 53 13 4 1 October 2017.................... 82 40 0 0 0 88 49 10 2 0 87 48 10 2 0 87 48 10 2 0 October 2018.................... 79 35 0 0 0 86 45 8 2 0 85 44 8 2 0 85 44 8 2 0 October 2019.................... 76 30 0 0 0 84 41 6 1 0 83 40 6 1 0 83 40 6 1 0 October 2020.................... 73 26 0 0 0 82 38 5 1 0 81 37 5 1 0 81 37 5 1 0 October 2021.................... 69 21 0 0 0 79 34 4 0 0 79 33 4 0 0 78 33 4 0 0 October 2022.................... 66 17 0 0 0 77 31 3 0 0 76 30 3 0 0 76 30 3 0 0 October 2023.................... 62 13 0 0 0 74 28 2 0 0 73 27 2 0 0 73 27 2 0 0 October 2024.................... 58 9 0 0 0 71 25 2 0 0 70 24 2 0 0 70 24 2 0 0 October 2025.................... 53 5 0 0 0 68 22 1 0 0 67 21 1 0 0 67 21 1 0 0 October 2026.................... 48 1 0 0 0 64 20 1 0 0 63 19 1 0 0 63 18 1 0 0 October 2027.................... 43 0 0 0 0 60 17 1 0 0 59 16 1 0 0 59 16 1 0 0 October 2028.................... 37 0 0 0 0 56 15 0 0 0 55 14 0 0 0 55 13 0 0 0 October 2029.................... 31 0 0 0 0 52 13 0 0 0 51 12 0 0 0 50 11 0 0 0 October 2030.................... 24 0 0 0 0 47 11 0 0 0 46 9 0 0 0 45 9 0 0 0 October 2031.................... 17 0 0 0 0 42 9 0 0 0 40 7 0 0 0 40 7 0 0 0 October 2032.................... 10 0 0 0 0 36 7 0 0 0 34 6 0 0 0 34 5 0 0 0 October 2033.................... 1 0 0 0 0 30 6 0 0 0 28 4 0 0 0 28 3 0 0 0 October 2034.................... 0 0 0 0 0 23 4 0 0 0 21 2 0 0 0 21 1 0 0 0 October 2035.................... 0 0 0 0 0 16 3 0 0 0 14 0 0 0 0 13 0 0 0 0 October 2036.................... 0 0 0 0 0 8 1 0 0 0 6 0 0 0 0 5 0 0 0 0 October 2037.................... 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Weighted Average Life (years)  ..................   17.1 8.8 4.0 2.9 2.3 20.5 11.4 4.9 3.4 2.7 20.2 11.1 5.0 3.5 2.7 20.2 11.1 5.0 3.5 2.7 S-20