PORSCHE RACING HISTORYSteve Southard (USA)
1979
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 40 | Porsche 914/6 | GTU | Steve Southard (USA)/William Koch (USA)/Earl Roe (USA) | Performance Specialists | 31st | 15th | 59th | 385 laps - DNF |
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 40 | Porsche 914/6 | GTU | Steve Southard (USA)/Earl Roe (USA) | Performance Specialists | 67th | 27th | 54th | 11 laps - DNF |
15 July 1979 - Mid-Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 40 | Porsche 914/6 | GTU | Steve Southard (USA)/Earl Roe (USA) | Performance Specialists | 17th | 5th | 27th | 90 laps |
2 September 1979 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 40 | Porsche 914/6 | GTU | Steve Southard (USA)/Earl Roe (USA) | Performance Specialists | 21st | 7th | 39th | 102 laps |