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4/8/08, 12:41 PM   #10
Re: Can USAC Copyright "Champ Car"?
Dwight Clock
Dwight Clock is offline
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Join Date: Jul 2007
Posts: 1,233
 

In 1971 the dirt cars, until then part of the "Championship Trail", were called the National Dirt Car Championship. In 1981 that changed to the Silver Crown division.