I know several NHRA class racers with A bodys and the same springs with SB motors,both of those cars sit flatter than they did with the 002 -003 springs I used the 002-003 on several BB A body cars and they sat a lot higher in the rear than my freinds cars did with the 456-457 SS springs, I did move the rear shacle mounts forward to make the rear spring eye and shaclkle angle proper for the SS springs.