PORSCHE RACING HISTORYDoug Lutz (USA)
1981
1 February 1981 - Daytona 24 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 Carrera RSR | 911 460 0037 | GTO | Doug Lutz (USA)/Robin Boone (USA)/Dave White (USA) | D. L. Performance Engineering (USA) | 63rd | 25th | 52nd | 47 laps - Accident |
21 March 1981 - Sebring 12 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 Carrera RSR | 911 460 0037 | GTO | Doug Lutz (USA)/Dave Panaccione (USA) | D. L. Performance Engineering (USA) | 32nd | 13th | 55th | 155 laps |
24 May 1981 - Lime Rock 200 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 Carrera RSR | 911 460 0037 | GTO | Doug Lutz (USA)/Dave Panaccione (USA) | D. L. Performance Engineering (USA) | 16th | 8th | 26th | 105 laps |
4 July 1981 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 Carrera RSR | 911 460 0037 | GTO | Doug Lutz (USA) | D. L. Performance Engineering (USA) | 29th | 11th | 26th | 22 laps - DNF |
29 November 1981 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 Carrera RSR | 911 460 0037 | GTO | Doug Lutz (USA)/Dave Panaccione (USA) | D. L. Performance Engineering (USA) | 25th | 11th | 32nd | 54 laps |