C body or B body wagon 8 3/4 rear

Sorry, the truck that I have is tubbed with a stock width rear and massively offset rims. I am trying to avoid having to buy new rims, so I want to keep the stock width. If I have to buy new rims, I would pick up a narrowed rear ( like 30 inches drum to drum). The specs that I have show that a 71 - 73 B body wagon, a 70 - 73 C body car or wagon, and a 72 - 74 D100, were all available with 8 3/4 rears and are all the same width.

flange to flange width is 59 7/16"

drum to drum width is 64 3/8"

Here are some pics so you could see what I mean.....

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