PORSCHE RACING HISTORYMichael Keyser (USA)
1971
31 January 1971 - Daytona 24 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 16 | Porsche 911 S | GT2.5 | Michael Keyser (USA)/Bob Beasley (USA)/Bruce Jennings (USA) | Toad Hall Racing (USA) | DNF | 39th | 337 laps - Engine |
20 March 1971 - Sebring 12 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 S | GT2.5 | Michael Keyser (USA)/Bruce Jennings (USA) | Toad Hall Racing (USA) | DNF | 36th | 23 laps - Con Rod |
24 July 1971 - Watkins Glen 6 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 16 | Porsche 911 T | GT2.5 | Michael Keyser (USA)/Bruce Jennings (USA) | Toad Hall Racing | DNF | 28th | 13 laps - Collision |