I have never seen one of these (64 Dodge, (truck?)

Like so many others on here that is just totally BA I can not for the life of me imagine why you would not just get it running as is. Make it safe and dependable, paint your shop logo on the side and drive the piss out of it. It is the epitome of a rescue rig for your customers. Show up pulling a trailer and drag their junk to your shop.