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| Mario Franchitti -- 1975 Gulf Mirage GR8 | Chris MacAllister -- 1973 Gulf Mirage | John Morton -- 1971 Porsche 908/3 | Phil Daigrepont -- 1978 Toj-SC 206 |
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| Brian Groza -- 1975 Sauber C4 | Cal Meeker -- 1973 Lola T294 / Wade Carter -- 1974 Lola T294 | Mario Franchitti -- 1975 Gulf Mirage GR8 / Wade Carter -- 1974 Lola T294 | Russell Kempnich -- 1984 Porsche 956C / Ike Keeler -- 1990 Oldsmobile Cutlass |
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| Bruce Canepa -- 1980 Porsche 962C / Parker Johnstone -- 1991 Acura Spice GTP Light | Robert Davis -- 1990 Mazda 787 / Ken Epsman -- 1984 Pontiac Firebird | Michael Haemmig -- 1988 Chevrolet Corvette / David Donohue -- 1991 BMW M5 IMSA | Robert Blain -- 1983 Sauber-Alpa GTP-L |
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| Mike McNamee -- 1985 Buick Somerset / Russell Kempnich -- 1984 Porsche 956C | Michael Haemmig -- 1988 Chevrolet Corvette / Russell Kempnich -- 1984 Porsche 956C | Steve Zlotkin -- 1988 Audi 200 Quattro | Bill Ockerlund -- 1991 Chevrolet Camaro (1) |
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| Henry Schmitt -- 1978 BMW M1 Procar | Russell Kempnich -- 1984 Porsche 956C | Ike Keeler -- 1990 Oldsmobile Cutlass | Bill Ockerlund -- 1991 Chevrolet Camaro (2) |
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| Chris Liebenberg -- 1991 Ford Mustang | Adam Carolla -- 1990 Peerless Oldsmobile | | |