I have some questions about the cab on the Ford car-hauler. What kind of radio is it that fits to the roof of the interior, (C.B. or AM-FM) and what would you use for a radio face or dials? Also, the roof mounted air conditioner has "legs" on the botom of it, How is the air supposed to get to the cab that way? Last and not really important to me but if you were building it, would you fill in between the cab shell and the interior?