Please understand that I do not possess any definitive information on this but form an efficiency standpoint, It would seem to make much more sense for the interiors to be left empty until after the top conversion. Otherwise, C&C would have to gut the interiors before they did anything else and then everything would have to be installed a second time, creating extra steps, both at C&C and at Doraville. Meanwhile, many coupe parts like headliners, window glass, rear package shelves and back seats would likely end up being tossed. It would be easier for that stuff just not to even be there before the conversion. Of course, that doesn't mean they actually did it that way.