Everything else is pretty interchangeable.
Spoken like a lawyer Ken! a lot of the sheetmetal will interchange with some work. GMC hung the front sheetmetal differently than chevy... it had something to do with the radiator supports mounting to that different crossmember. It wasn't till 1958 that gmc and chevy front sheetmetal was hung the same. Although the radiators were a still a little different.
Can You be specific with a year or body style?
