yep, I was ass backwards when i worked on my car. I didn't know much when I got it. I just had the gears installed which I should have done first. I did the catback, K&N, TB/plenum, then the pullies, then the h-pipe, and finally the gears. That was mainly because of when I had and didn't have money, and what I could find for the best price at the time. It's all done now, but I would have probably went with gears, mid pipe, catback, and tb/plenum last. The K&N and pullies could have went anywhere in between. I've got a tuner and springs in the mail.