What PARTS did Hurst and Chrysler put in the Super Stock Barracuda & Dart not in other factory cars

In theory, the radio/heater delete plate on the Darts could be had if you ordered a car without them. Practically speaking, that doesn't make sense for a street car. Anyone ever see one? Years ago my first delete plate I got from a junkyard in Tucson, Az. so I guess someone could have ordered a car like that in that area. But that's the only one I've ever seen. The outside mirror delete was something else as any place I know of requires them. Anyone ever see a non BO/LO car with these parts?