Sounds like it might be a '55-'64 passenger car rear end. I had a '56 pass. rear end in my '49 and it was about 2" to narrow. The tires rubbed on corners until I put in 1" wheel spacers. Does it have 5-bolt or 6-bolt axles in it?
'38 Chevy 1-1/2 ton '49 Chevy 1/2 ton '54 Chevy 6400 2 ton '55.2 GMC 3/4 ton '56 GMC 1-ton
