-- they built almost any type of body on an A/AA -- Hey Brian -- been a whileI have always liked the c-cab bodies, here is a pic I saved (owner unknown) the bodies were made by independent company's, I guess they are for quick delivery with ease of access.
The only real left over from the model TT was the worm axle, but with many updates such as a wider ring gear, bearings, and larger axle shafts.