if you haven't tracked the car before, the item that needs to be in your cart is seat time. go track the car with only the basics first in order to figure out what parts you need to complement your driving.

i'm assuming you're a new to road racing.....all you need is a set of track pads (carbotech,winmax, etc) and high temp brake fluid for your first time out. ATE Typ200 at the minimum, skip the RBF600/660 because they're not much better than ATE....Castrol SRF or P.mu gfour is what i recommend. Good tires will shave more time for you than a bbk or suspension. If budget allows, pick out a set of 200TW tires, federal RSRR, hankook RS4, bridgestone re71r or anything in this class will work.

build the car up as you get faster. remember that driving a slow car fast is always more fun than driving a fast car slow.