If you want a more budget friendly setup, theres a couple different coilover setups available. The agility setup, shigpeed, and theres one more but I cant remember the name of it (AMR Engineering maybe?). G20.net should have that info. Search around and you can find it. Shigspeed is a big member of the community, and I can tell you his work is top notch though. If you can swing the cash, go that route. You can even customize the spring rates to whatever you want.