PORSCHE RACING HISTORYMilt Minter (USA)
1973 : Sebring 12 Hours - 2nd overall : Watkins Glen 6 Hours - 1st in class
24 March 1973 - Sebring 12 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 911 Carrera RSR | 911 360 0755 | GTO | Michael Keyser (USA)/Milt Minter (USA) | Toad Hall Motor Racing (USA) | 2nd | 2nd | 5th | 225 laps |
21 July 1973 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 16 | Porsche 911 Carrera RSR | 911 360 0755 | GT | Michael Keyser (USA)/Milt Minter (USA) | Toad Hall Motor Racing (USA) | 8th | 1st | 15th | 168 laps |
21 July 1973 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 70 | Porsche 911 Carrera RSR | 911 360 0601 | GT | Milt Minter (USA)/Bob Harmon (USA)/Bruce Jennings (USA) | Bob Harmon Racing (USA) | DNF | 18th | 83 laps - Brakes |