honestly i love my ground controls. Right now i have them paired with some Koni yellow shocks but pattywak's can only be paired with either stock struts or tokico struts. Tokico illumina's are still pretty good though. And yes, you can slam your car with these. I had my car lowered with about 3/4" to spare with 1/2 a finger gap, and the tires were 205/60 instead of 65. I lowered it all the way once and i'll never do that again because where i live, it's not drivable like that. lol. Plus you can adjust the height just from jacking the car up with the wheels still on.