Any American-Made stock, hardtop automobile, or station wagon is allowed. No trucks, convertibles, jeeps, hearses, limousines, Chrysler Imperials, sub-frames Chrysler Imperial, or suicide-door Lincolns allowed.
Each derby will be composed of three individual heats, one consolation heat (no money for consolation), and one feature. The feature demolition event will be comprised of the winners of the heat races. The decision of the official will be final as to the winner of each heat. All rules will be strictly enforced.