I just picked up a JDM 4-1 Header tonight and right now my main concern is SOUND. What would be quieter and less raspy, A resonated T1R test pipe or magnaflow Cat ??

ANy other suggestions as to keeping the exhaust system low key without drawing too much attention. I currently have a 5 zigen A spec exhaust which I am looking to sell for something a lot quieter.

ALso what else do I need to complete this system and have it bolt up to a catback exhaust ??