I remember Smokey making subtle body changes on a NASCAR Chevelle, he changed some radius' here & there, and chopped the top slightly and (I think) changed the angle of the windshield to enhance the aerodynamics, but leave the original windshield uncut. The car didn't pass tech at first, NASCAR used cut templates of vehicle profiles to insure against cheating, and his car failed the template stage. So he took the inspectors out to the parking lot and had them check their templates on a new street car. Yup, the templates didn't fit the production car either. Smokey was one of a kind...