I'm very happy with my kit and have done at least 15 track days. It is a bit stff but on 18" wheels is really not bad. I can't remember about the bump stops. Do have some noise occasionally from the sway bar endlinks, so have to lubricate them occasionally. Definitely a great kit for the money.
AW on Fox Red Extended, Alum trim, ZPP, ZTP, DCT, 19" wheels, Heated front seats, HD radio, Sat radio, I-pod & usb, Premium sound, AP racing BBK, 18 Volk Racing TE 37s, Akrapovic Evolution exhaust, AST suspension