PORSCHE RACING HISTORYTom Alan Marx (USA)
1982 : Riverside 6 Hours - 3rd in class
31 January 1982 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 49 | Porsche 911 Carrera RSR | 12803002 | GTO | Jerry Jolly (USA)/Bob Copeman (USA)/Tom Alan Marx (USA) | Copeman Racing (USA) | 46th | 21st | 63rd | 220 laps - DNF |
25 April 1982 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 53 | Porsche 911 | GTU | Steve Michaelson (USA)/Tom Alan Marx (USA)/Dennis Lanfre (USA) | RSR Associates | 9th | 3rd | 36th | 172 laps |