| 1990 Lime Rock 150 Laps |
1st |
Drake Olson |
- |
| 1990 3 h West Palm Beach |
1st |
Drake Olson |
- |
| 1990 Topeka 300 Kilometres |
1st |
Juan-Manuel Fangio II |
- |
| 1990 Lime Rock 150 Laps |
2nd |
Juan-Manuel Fangio II |
+0.2 |
| 1990 Road Atlanta 500 Kilometres |
2nd |
Juan-Manuel Fangio II |
+0.5 |
| 1990 Miami Grand Prix |
3rd |
Drake Olson |
+0.6 |
| 1989 Lime Rock 150 Laps |
4th |
Juan-Manuel Fangio II |
+2.9 |
| 1989 Topeka 300 Kilometres |
4th |
Willy Ribbs |
+1.7 |
| 1990 3 h West Palm Beach |
4th |
Juan-Manuel Fangio II |
+0.8 |
| 1990 Topeka 300 Kilometres |
4th |
Drake Olson |
+1.2 |
| 1989 Del Mar 2 Hours |
5th |
Willy Ribbs |
+1.5 |
| 1989 2 h San Antonio |
5th |
Willy T. Ribbs |
+2.0 |
| 1989 300 km Sears Point |
5th |
Willy T. Ribbs |
+0.9 |
| 1989 Road America 500 Kilometres |
6th |
Willy T Ribbs |
+6.7 |
| 1989 Portland 300 Kilometres |
6th |
Willy Ribbs |
+1.2 |
| 1989 Mid-Ohio 500 Kilometres |
6th |
Juan-Manuel Fangio II |
+1.7 |
| 1990 Mid-Ohio 500 Kilometres |
7th |
Juan-Manuel Fangio II |
+1.9 |
| 1990 Sebring 12 Hours |
8th |
Rocky Moran |
+3.0 |
| 1991 24 Hours of Daytona |
8th |
Willy T. Ribbs |
+6.2 |
| 1989 360 km Tampa |
8th |
WIlly Ribbs |
+2.4 |