They do have a NASCAR Historic Series. I think they run 5 or 6 times a year.
http://www.hscrs.com/gallery.php
It's difficult to get modern NASCAR fans interested though, because they really don't care about the make of car, or the mechanical differences between the makes. Modern NASCAR is all about selling the driver, and their image, and it's become a bit like WWF wrestling. Fans cheer for their favorite drivers, boo Kyle Busch, buy the appropriate merchandise, and they care very little about engines, chassis, or suspensions.
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