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Group 1A: Pre-1940
Sports/Racing and Touring Cars
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Group 2A: 1927-1951
Racing Cars
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Group 3A -- 1962-1967
Shelby Cobras
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Group 4A 1955-1962
Sports and GT Cars
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Group 5A: 1960-1968
Sports/Racing USRRC Cars
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Group 6A: 1973-1982
IMSA GT, GTX, AAGT, GTU/GTO Cars
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Group 7A: 1963-1966
Sports and GT Cars Over 2500cc.
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Group 8A: 1974-1980
Formula Atlantic Cars
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Group 9A: Historic
Trans-Am Cars
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Group 1B: 1955-1961
Sports/Racing Cars Under 2000cc.
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Group 2B: 1958-1963
Formula Junior Cars
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Group 3B: 1955-1961
Sports/Racing Cars Over 2000cc.
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Group 4B: 1970-1979
Sports/Racing Cars Under 2000cc.
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Group 5B: 1947-1955
Sports, Sports/Racing, and GT Cars
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Group 6B: 1981-1989
FIA Mfg. Chmpshp. and IMSA GTP Cars
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Group 7B: 1961-1966
Sports and GT Cars under 2500cc.
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Group 8B: 1974-1990
Stock Cars with Disc Brakes
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A Stroll Through the
Pits
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Ernie Nagamatsu Spins
Out!
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