Originally Posted By Magnum

Can we assume a Ss spring in an A body will have the perfect shackle angle?
No, absolutely not! Install your springs first and then look at the rear shackle angles scope Mopar made a bunch of different SS drag race springs as well as road handling SS type springs, not all of them will work well with stock front mounts and stock rear shackle hole locations shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)