Went to one of the local wrecking yards yesterday looking for parts for my 71 GMC. Didn't find much in the line of parts but this did follow me home: 71 GMC, 350/th350, don't know about the engine or trans yet although it does turn over.
It has an aftermarket electronic ignition that I need info on, it has a box on the fender that says Hays. ( see pics)
The only things I saw missing (so far) are power steering pump, brackets and hoses, the tailgate ashtray and the keys.
I think I got a pretty good deal at $750.00, if I'm lucky it may even run!