| Model | Output Rating | Clock Position | Lester Part # | AC Delco Part # |
| 10SI | 63amps | 3:00 | 7127-3 | 321-39 |
| 10SI | 63amps | 9:00 | 7127-9 | 321-41 |
| 10SI | 63amps | 12:00 | 7127-12 | 321-43 |
| 10SI | 63amps | 6:00 | 7127-6 | 321-135 |
| 12SI | 78amps | 3:00 | 7278-3 | 321-247 or 321-357 |
| 12SI | 78amps | 9:00 | 7278-9 | 321-244 |
| 12SI | 78amps | 12:00 | 7278-12 | 321-249 or 321-254 |
| 12SI | 94amps | 3:00 | 7294-3 | 321-266 |
| 12SI | 94amps | 9:00 | 7294-9 | 321-269 |
| 12SI | 94amps | 12:00 | 7294-12 | --------- |