I've never seen a Coleman Chevy, but that doesn't mean they don't exist. Because of the tapered frame, AD trucks are hard to convert to 4x4 unless you have original gear designed for the truck. Spring perches on NAPCO axles are cast into the axle housing and they would be tough to machine off and move. I'm not sure about Coleman gear, but I assume it would be a tough swap. I'm sure the swap could be done somehow, but you would end up with a system filled with parts made of "unobtainium". If you think NAPCO parts are rare....
George
