I changed the rear end housing out to a chrysler 8 3/4 but left it in the same location. Still have the shocks on it that I put on in 1973.
I took the stock traction bars off and replaced with a set of Cal-Tracs.
The rear springs are still stock.
I also run alot of down pinion angle so it really plants the tires and leaves even on the rear and not to one side like it did before i put the Cal-Tracs on.