PORSCHE RACING HISTORYGregg Loomis (USA)
1968 : Sebring 12 Hours - 2nd in class
23 March 1968 - Sebring 12 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 S | GT2.0 | Pete Harrison (USA)/Gregg Loomis (USA)/Jack Ryan (USA) | Gregg Loomis (USA) | 8th | 2nd | 40th | 204 laps |