Alright i have a 1985 cutlass supreme< i changed the front springs to a set of moog 5658s. Now i am on the rear of the car. i think i have the F-41 package in my car because it has the rear sway bar. The car was originally a v6 and i put a v8 in it. Now what would be the best spring rate for the rear from moog? i want to improve handleing, i also dont want the rear of the car lower then the front< i was looking on maliburacing.com and i was looking at the 5409s but the load hight is like 7.5. Sorry for rambling, if anyone can help me with this i would greatly appresiate it. Thanks in advance.