Some cars use a 8.5 rear
Just find one of those for easy peasy rear end upgrade
Springs and shocks should do it
Check the rest of the parts while your working on it. Balljoints ect wear out
ill be looking for an 8.5 then, thanks for your help! just to confirm, are these the right parts for the regal?
KYB Shocks & Struts 343127 - KYB Excel-G Gas Shocks and Struts
and
Moog Chassis Parts 5660 - Moog Replacement Coil Springs