whoa whoa whoa, if you retard your timing on a SOHC by 2 degrees you will gain power. well on a stock engine. they arent just for looks. but yea, color aint s**t, and the are all the same size. but dont put the turbo cam in until you get the turbo, youll eat up some gas and lose power. there is a such thing as to much valve overlap in a N/A engine.