well the ACS springs lowered the car approx. 0.75-1.00 inch. The ride is actually a bit stiffer and body roll was noticeably reduced, but I personally feel that it's not good enough, well at least from my observation, during hard cornering. I'm planning to go the the tracks this summer so that's why planning to change the shocks also, the problem is I don't know which kind or brand gives the best performance.