10 bolt rear end

[Matt_50]

Ok guys I need a little help. At the very least I need to be pointed in the right direction. When I try to Google different 10 bolts I pull up a lot of how to identify or hot rod articles.

First off...7.5s were in cars and small trucks right? I have an 84 c10 2 wheel drive long bed. 10 bolts around the cover and the two lugs at 7 and 5 clock. This would be the 8.5 right?

My main question...what is the difference in the rear ends? I'm stripping the 84 for parts.. I want to use the rear end. I'm being told I need a 10 bolt from something like a camaro to get the right width. Or I'm told to find a 4x4 rear end. I'm shooting for roughly 60"s WMS. The 84 c10 measures 64 with drums on. Is it possible to shorten the width somehow?

I thought all these rear ends were the same as far as housing... is the width difference from the brakes or axles? Was the 10 bolt made in various lengths? I'm told that if it's the 8.5 then I have a good rear end and would like to make it work.

Thanks