More questions! Black Falcon above has straight axle, and rear tires poking past bodywork; yet same rule list shows: "All parts of the tire tread and wheel must be inside of stock body or fender line. Fender splash pans must be retained... Full size stock radiator required for type of body used. Must be stock production type rear end. Ratchet type (limited slip) or locked rear ends accepted. Quick-change rear ends not permitted. Full street equipment required including fan, generator, lights and stock water pump. Must retain complete stock front suspension system as produced by the manufacturer on the assembly line for the body used."