ok ive looked at the cobaltaddiction website and have come to the conclusion i wanna get the stage 3 s/c upgrade they sell, my question is , is there anything i have to do other than just installing the kit, like upgradeing exhaust right away, fuel rail, etc or can i just install the kit and be allset?? i plan on the exhaust and intake but anything thats a must have to install the stage 3 kit? thanks