hi i just bought a 99 gtp. i dont have much money and i dont know much about modding, . it was bone stock. so i put a 180 thermo on it and an intake. im goin to get cooler plugs. i heard about dropping pulley size. what size should i go to? i dont plan on doin much more other than maybe a pcm and/or exhaust after that. Any info would be greatly appreciated. thank u n god bless!
jerry