What is the difference between the 66 and 72 3/4 ton rearends. They both share the same trailing arms ?I have a 1966 3/4 ton 8 lug rearend not sure what gear is in it.I was saving it for a project,but found out i can't use it.I will sell it if it will work for you.

1951 3100 Chevrolet
1951 Chevrolet Suburban Carryall
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