They used the exact same cab for the 1/2 tons all the way thru the 2 tons,, so doors, floors, seats, windsheild frames.. all that stuff is interchangable.
Hoods are all interchangable, so are headlight buckets and grills.. the 1.5 and 2 ton front fenders have a bigger opening.. i'm not sure what size tires they put on the 1 ton to know for sure if the 1.5 or 2 ton fenders will fit.
What seems to be the hardest to land are solid running boards for the 1/2 ton and 3/4 ton, and rear fenders. They can be found, but are a little pricy.
