its not major, but if you go thru and remove any extra length from your hoses. shorten vac lines and radiator lines. make sure to leave enough so that if the engine rocks a little they wont be tugged, but every little adds up. If you get a tuner, you can remove your EVAP system and pull the charcoal canister. remove or find a smaller wiper fluid tank. swap to a smaller lighter battery. drilled rotors, swap to a single pipe exhaust, remove spoiler,
i dont agree with pulling the side braces and the foam from the bumpers. if your pulling those, might as well pull the air bags and sensors.
If your making a track only car you might consider the following: AC delete including its radiator, wiper tank and pass side wiper arm, sound system head unit and speakers, carpet, back seats and seat belts, rear bumper support and rear door (if 4 door) window motors and door locks, EGR, Evap, rear o2 and remove all wiring for them too, pass side mirror, swap to a smaller gas tank, side skirts and trim panels, hood shocks, cruse control, remove parking brake and hardware from under rotor. thats all i can think of for now....
