Rear end change

4links are not needed in Mopars. For street: xhd springs, good shocks and pinion snubber. For track or hipo street: Super stock springs, good shocks and pinion snubber set at 1" or 1.5". Cal-tracs if you can't use a snubber. Good shocks are a MUST. Our '66 Cuda runs 10.69 sec @ 123+ mph with S.S. Springs and snubber with no traction issues.