PORSCHE RACING HISTORYPorsche 911 Carrera RSR - Chassis No. 911 360 0386
13 July 1974 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 92 | Porsche 911 Carrera RSR | 911 360 0386 | GT | Dieter Oest (USA)/Mike Tillson (USA)/Lou Higgins (CDN) | Oest-Tillson Racing (USA) | DNF | 30th | 39 laps - Engine Failure |
2 February 1975 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 92 | Porsche 911 Carrera RSR | 911 360 0386 | GTO | Mike Tillson (USA)/Dieter Oest (USA) | Oest/Tillson (USA) | 11th | 9th | 34th | 566 laps |
1 February 1976 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 92 | Porsche 911 Carrera RSR | 911 360 0386 | GTO | Mike Tillson (USA)/Dieter Oest (USA)/Bruce Jennings (USA) | Oest/Tillson (USA) | 5th | 5th | 40th | 508 laps |
20 March 1976 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 92 | Porsche 911 Carrera RSR | 911 360 0386 | GTO | Dieter Oest (USA)/Mike Tillson (USA) | Oest-Tillson Racing (USA) | 10th | 9th | 35th | 208 laps |
10 July 1976 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 72 | Porsche 911 Carrera RSR | 911 360 0386 | GT | Mike Tillson (USA)/Dieter Oest (USA) | Mike Tillson (USA) | 14th | 4th | 26th | 145 laps |