check out
http://www.tcklineracing.com/ and
http://www.ground-control-store.com/products/index.php for the coilovers and camber.
if you are autocrossing look into Hoosier A6's and apex wheels.
http://www.apexraceparts.com/Wheels_c_11.html
http://www.tirerack.com/tires/tires....r&tireModel=A6
you will eventually do both so either one is a good place to start
I would go for the wheels and tires. or both