Hey ok well im new to this, but i am also trying to figure out what will do my corolla ascent good (which i have sitting on 18's chrome mizati wheels). I have a connection in japan who quoted AU$1100 for D1 Coilovers shipped, which will allow me to change stiffness and also ride height which would be good for insurance purposes etc. But not too sure if it will void new car warranty etc? and i hear it will ruin the ride of the car?? thanks alot