| 1987 West Palm Beach 3 Hours |
8th |
Jim Downing |
+5.6 |
| 1989 Lime Rock 150 Laps |
11th |
Jim Downing |
+17.9 |
| 1988 3 h San Antonio |
13th |
Jim Downing |
+11.2 |
| 1989 Watkins Glen 500 Kilometres |
13th |
Jim Downing |
+12.7 |
| 1989 Road Atlanta 500 Kilometres |
14th |
Jim Downing |
+10.0 |
| 1988 Road Atlanta 500 Kilometres |
15th |
Jim Downing |
+11.3 |
| 1987 Laguna Seca 300 Kilometres |
16th |
Jim Downing |
+6.6 |
| 1989 Topeka 300 Kilometres |
16th |
Jim Downing |
+12.9 |
| 1989 Mid-Ohio 500 Kilometres |
16th |
Jim Downing |
+9.4 |
| 1987 2 h Del Mar |
17th |
Jim Downing |
+9.3 |
| 1989 West Palm Beach 3 Hours |
17th |
Jim Downing |
+7.5 |
| 1988 Watkins Glen 500 Kilometres |
18th |
Jim Downing |
+14.6 |
| 1989 Portland 300 Kilometres |
18th |
Jim Downing |
+8.5 |
| 1989 Topeka 300 Kilometres |
18th |
Jim Briody |
+17.3 |
| 1986 500 miles of Watkins Glen |
19th |
Jim Downing |
+15.0 |
| 1989 Miami 3 Hours |
20th |
Jim Downing |
+9.4 |
| 1985 Pocono 500 Kilometres |
20th |
Don Marsh |
+16.0 |
| 1989 360 km Tampa |
21st |
Jim Downing |
+11.6 |
| 1990 Lime Rock 150 Laps |
21st |
Frank Jellinek |
+7.1 |
| 1989 Road America 500 Kilometres |
21st |
Jim Downing |
+20.8 |