[aintnoV8]

well i have my measurements from my original axle. from backing plate to backing plate is 55 inches. iv talked to poeple about swapping newer rears from a 60's chevy and gmc. iv been told to go with certain years either camaro, nova, firebird, or chevelle, and s10. right now i picked up a s10 rear that measures BP to BP 52 inches. after searching some forums about swaping c10 rears they say they are wider and more dependable and easier to get a hold of. the only thing i know of off hand is that 4 wheel drive 60's pick ups came with leaf springs. so i guess this saturday i will be walking around and sliding under late 60's gmc pickups and getting BP to BP measurements.