PORSCHE RACING HISTORYLee Mueller (USA)
1978 : Talladega 6 Hours - 1st in class
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 76 | Porsche 911 | GTU | Frank Thomas (USA)/Lee Mueller (USA)/Logan Blackburn (USA) | Quality Inn | 48th | 17th | 39th | 224 laps - DNF |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 76 | Porsche 911 | GTU | Frank Thomas (USA)/Lee Mueller (USA)/Paul May (USA) | Quality Inn | 60th | 24th | 22nd | 43 laps - Engine |
2 April 1978 - Talladega 6 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 76 | Porsche 911 | GTU | Lee Mueller (USA)/Frank Thomas (USA) | Quality Inn | 7th | 1st | 18th | 156 laps |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 76 | Porsche 911 | GTU | Frank Thomas (USA)/Lee Mueller (USA) | Quality Inn | 39th | 13th | 37th | 37 laps - DNF |