SP 4100-4125:
Many (but not all) of SP's GP20's were run through the GRIP program.
SSW 4134-4153:
| GRIP number | prev. number | orig. number |
| SP 4100 | SP 4065 | SP 7215 |
| SP 4101 | SP 4083 | SP 7233 |
| SP 4102 | SP 4056 | SP 7206 |
| SP 4103 | SP 4067 | SP 7217 |
| SP 4104 | SP 4073 | SP 7223 |
| SP 4105 | SP 4086 | SP 7236 |
| SP 4106 | SP 4071 | SP 7221 |
| SP 4107 | SP 4059 | SP 7209 |
| SP 4108 | SP 4053 | SP 7203 |
| SP 4109 | SP 4080 | SP 7230 |
| SP 4110 | SP 4051 | SP 7201 |
| SP 4111 | SP 4062 | SP 7212 |
| SP 4112 | SP 4082 | SP 7232 |
| SP 4113 | SP 4078 | SP 7228 |
| SP 4114 | SP 4061 | SP 7211 |
| SP 4115 | SP 4058 | SP 7208 |
| SP 4116 | SP 4069 | SP 7219 |
| SP 4117 | SP 4084 | SP 7234 |
| SP 4118 | SP 4074 | SP 7224 |
| SP 4119 | SP 4054 | SP 7204 |
| SP 4120 | SP 4066 | SP 7216 |
| SP 4121 | SP 4075 | SP 7225 |
| SP 4122 | SP 4052 | SP 7202 |
| SP 4123 | SP 4068 | SP 7218 |
| SP 4124 | SP 4077 | SP 7227 |
| SP 4125 | SP 4057 | SP 7207 |