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For the purposes of the 2003 North American Championship, Track and Driver recognizes the following
race car classes or divisions:
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Full-body, fabricated chassis race cars, including: all IMCA, WISSOTA, UMP, NLRA, ALMS and
similar Late Model type cars.
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Winged and non-winged sprint cars.
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Stock-frame, open-wheel race cars. Including all IMCA, UMP, AMRA, WISSOTA and similar
Modidfed style race cars.
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Open-wheel, fabricated chassis race cars. Including all D.I.R.T., Big Block, 358,
Sportsman Modifieds and similar style race cars.
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Stock front frame clip, full-body race cars. Including WISSOTA SUper Stocks and similar styles such as
Sportsman and Limited Late Models.
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Stock body, stock chassis race cars. Including classes such as
Hobby Stocks, Pure Stocks, etc.
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Truck body racing classes.
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All 4-Cylinder race cars. Including Mini-Stocks, Mini-Mods, Ponies, etc.
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