Audi S4 (B5):

Season Team / Series
Driver / Races / Standings
2003 Istook-Aines Motorsport Group
Grand-Am Sports Car Series, Class GT
Randy Pobst (1 of 12 races), 20.
Don Istook (8 of 12 races)
Ken Breazeale (2 of 12 races)
John Rutherford (1 of 12 races)
Steve Olsen (2 of 12 races)
Nicholas Dardet (1 of 12 races)
Joe Masessa (2 of 12 races)
John Munson (0 of 12 races)
2002 Istook-Aines Motorsport Group
Grand-Am Sports Car Series, Class GT
Don Istook (1 of 10 races)
Ted Martin (1 of 10 races)

Legend:

Intermediate standings during the current season are in italics.