Plan to get an AEM V2 intake, buddy club racing header, and an injen exhaust....does it all have to be in order in building? I've been waiting since '02 for my warranty to expire, it finally has and I'm ready to mess with my car. Will it even make a difference in feel?! Rather than what I'm paying for the items, I'm more interested in the cost of installing....what's it going to cost me?!