PORSCHE RACING HISTORYLeo Kinnunen (FI)
1973 : Interserie Nürburgring - 2nd overall : Targa Florio - 3rd overall : Interserie Norisring - 1st overall : Interserie Misano - 1st
1 April 1973 - Interserie Nürburgring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 917/10 TC | 917/10-004 | INT | Leo Kinnunen (FI) | Motorsportclub Stuttgart - Racing Team AAW (D) | 2nd | 2nd | 9th | 14 laps |
13 May 1973 - Targa Florio - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 911 Carrera RSR | 911 360 0020 R2 | S3.0 | Leo Kinnunen (FI)/Claude Haldi (CH) | Martini Racing | 3rd | 3rd | 15th | 11 laps - 7:12:42 |
24 June 1973 - Interserie Norisring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 917/10 TC | 917/10-004 | Gr. 7 | Leo Kinnunen (FI) | Motorsport-Club Stuttgart/Racing Team AAW (D) | 1st | 1st | 2nd | 140 laps |
19 August 1973 - Interserie Misano - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 917/10 TC | 917/10-004 | Leo Kinnunen (FI) | Motorsport-Club Stuttgart/Racing Team AAW (D) | 1st | 1st | 80 laps |