I put a 56 Olds rear end in my 51 1/2 ton panel using
the Chassis Engineering rear spring kit. Comes with
new spring hangers, shackles, shock mount, super slider springs,
shocks, u bolts, spring pads and hardware.
It perfectly locates the rear end 2" rearward. Nicely centered in the fender well now.
Worst part of the job is grinding/drilling of the old rivets on the spring hangers.
mike