Paul, I don't know much about the wagon pumps, but according to Kragen, the pumps are different part numbers between the sedan and wagon, but look similar:
Sedan vs. wagon
As far as finding a tank hanger from the junkyard, all the yards here cut out and remove the gas tanks before the cars hit the yard. This is the reason I had to get Boway to help me by donating a Tbird fuel line. All of the ones in the junkyards here have been cut. But if you can find a used hanger, you should be golden.
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