Bolt on upgrades, most efficient?
hey well after hearing my cousin hitting 17.2 with his stock auto Celica GTS, ive realized that i really need to do performance so i dont suck, i have a 95 integra GSR, n i got a cold air on it for now, got denso spark plugs coming in, but im wondering if AEM pulleys would be hard to install, im not too stupid, engine wise but i dont know a whole lot. im a junior in high school taking an automotive class. or what other kind of bolt ons would efficiently help? im thinking of headers btu do i have other choices? thanks