would the heads be a worth while investment right now? I have heard all over that the heads a cam on this car really hold it back. i think i will go with spohn sfc's i found a place here in san antonio that will weld in my sfc's ans exahust for 50 bucks....cheap labor rocks. does the intake really make much more power? I will either learn how to burn my own chips or find someone here who knows my setup to burn me one.