PORSCHE RACING HISTORYTony Adamowicz (USA)
1973
4 February 1973 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 S | GT+2.0 | Michael Keyser (USA)/Tony Adamowicz (USA)/Bob Beasley (USA) | Toad Hall Motor Racing (USA) | 8th | 6th | 26th | 587 laps |