I am looking to get a full exhaust on my ss/sc and notice their is so many options out there. I was wondering what pipe size is best. The 2.5 or 3inch. And i was wondering if its best to stay with the same size when going from downpipe to catback, or smaller catback is better! Please someone help me. Oh and feedback on ZZP exhaust components if anyone has them.
Thanx

 

Just put a magnaflow muffler on the car and delete the cat, that should be good