PORSCHE RACING HISTORYPorsche 924 Carrera GTR - Chassis No. WP0ZZZ93ZBS720005
16 August 1981 - Mosport 6 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720005 | GTO | Ludwig Heimrath, Jr (CDN)/Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 15th | 4th | 15th | 186 laps |
30 August 1981 - Mid-Ohio 500 km - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720005 | Gr.4 | Ludwig Heimrath, Sr (CDN)/Ludwig Heimrath, Jr (CDN) | Heimrath Racing (CDN) | 24th | 17th | 22nd | 103 laps - DNF |
25 November 1984 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 50 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720005 | GTU | Ludwig Heimrath, Sr (CDN)/Ludwig Heimrath, Jr (CDN) | 46th | 10th | 57th | 56 laps - DNF |