1980
Trans-Am Championship
1/6 Hallet
# 23 - 914/6 - DNF
Zulkowski
# 26 - 911 SC - 5°
Overby
# 98 - 911 SC -
Winner
Bauer
1/6 Portland
# 18 - 911 - DNF
Schroeder
# 23 - 914/6 - DNF
Zulkowski
# 57 - 911 SC -
3°
Shelton
# 59 - 911 SC - DNF
Feodorhoff
# 98 - 911 SC -
2°
Bauer
5/7 Watkins Glen
# 23 - 914/6 - DNF
Zulkowski / Pullyblank
# 26 - 911 SC Targa - DNF
Overby / Harmstad
Gallery
# 57 - 911 SC -
3°
Shelton / Leven
Gallery
# 98 - 911 SC -
Winner
Bauer / Green
Gallery
19/7 Road America
# 13 - 911 SC - 23°
Altman
# 23 - 914/6 - DNS
Zulkowski
# 57 - 911 SC -
Winner
Shelton
# 98 - 911 SC - 4°
Bauer
10/8 Brainerd
# 23 - 914/6 - DNF
Zulkowski
# 57 - 911 SC - DNF
Shelton
# 98 - 911 SC -
Winner
Bauer
23/8 Trois-Rivières
# 5 - 911 - 10°
Bienvenue
# 23 - 914/6 - DNF
Zulkowski
# 98 - 911 SC - DNS
Bauer
7/9 Westwood
# 11 - 914/6 - 13°
Taylor
# 23 - 914/6 - DNF
Zulkowski
# 57 - 911 SC -
2°
Shelton
Gallery
# 98 - 911 SC -
Winner
Bauer
Gallery
19/10 Laguna Seca
# 9 - 911 SC - DNF
Herman
# 11 - 911 - DNS
Nylander
# 23 - 914/6 - DNF
Zulkowski
# 45 - 911 - 27°
Neal
# 57 - 911 SC - DNS
Shelton
# 98 - 911 SC- DNF
Bauer
25/10 Riverside
# 19 - 911 SC - DNS
Nardi
# 23 - 914/6 - 23°
Zulkowski
# 44 - 914/6 - 25°
Korpiel
# 57 - 911 SC - 6°
Shelton
# 98 - 911 SC- 5°
Bauer