PORSCHE RACING HISTORYLawrence Farmer (USA)
1981
26 April 1981 - Riverside 6 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 42 | Porsche 911 Carrera RSR | 12803002 | GTX | Bob Copeman (USA)/Lawrence Farmer (USA)/Ken Moore (USA) | Alex Porsche Haus (USA) | 57th | 19th | 52nd | 7 laps - DNF |
30 August 1981 - Mid-Ohio 500 km - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 911 Carrera RSR | 12803002 | Gr.4 | Bob Copeman (USA)/Lawrence Farmer (USA) | Bob Copeman (USA) | 16th | 9th | 32nd | 110 laps |