1) Intake
2) Header
3) Cat
4) Cat back

There's all 4.

 

speaking of the cat, whats the best high flow cat you can get to go along with a catback?

 

Correct, if Im wrong, but Im pretty sure Magnaflow makes pretty good one.

 

whats the ball park on a cat? will I gain much? I talked to Kevin, (civterga), or atleast I think it was him, and he said a intake manifold, is the cheapest mod that you will feel the most, thats the main thing, being able to feel it