PORSCHE RACING HISTORYGary Mesnick (USA)
1978 : Daytona 24 Hours - 1st in class
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 S | GTU | Dave White (USA)/Gary Mesnick (USA)/J. Dana Roehrig (USA) | J. Dana Roehrig | 11th | 1st | 26th | 604 laps - Engine |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 S | GTU | Dave White (USA)/J. Dana Roehrig (USA)/Gary Mesnick (USA) | Roehrig Racing Inc. | 18th | 7th | 30th | 185 laps |