PORSCHE RACING HISTORYRudy Bartling (CDN)
1973 : Daytona 24 Hours - 2nd in class
4 February 1973 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 19 | Porsche 908/02 | 908/02-017 | S3.0 | Rudy Bartling (CDN)/Klaus Bytzek (CDN)/Bert Kuehne (CDN) | Harry Bytzek (CDN) | 12th | 2nd | 5th | 532 laps |
24 March 1973 - Sebring 12 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 46 | Porsche 911 S | GTU | Klaus Bytzek (CDN)/Rudy Bartling (CDN) | Bytzek Automotive (CDN) | 55th | 16th | 33rd | 80 laps - DNF |