[Robert1970C20rstbukt]

The only difference between the 3/4 and 1 ton rear ends is that the 3/4 ton uses roller bearings on the front pinion, and the 1 ton has ball bearings. I really couldn't see anything different in the service manual except that the cab chassis rear ends are narrorer than the regular pickup rear ends. The third members are interchangeable is what I've heard. When I fixed the rear brakes on my '70 I got everything I needed from AutoZone. A set of rear shoes to do both sides(HD shoes, 2 3/4" wide), new brake hose, and two wheel cylinder rebuilt kits ran me about 35 bucks.