dude, go custom! Seriously. Cheap, and easy. Magnaflow res: $65. Magnaflow muffler: $65. Custom piping ~$200. You'd be lucky to find a nice quality catback that would be 3" or however big you want it for a similar price. Or like i said earlier, Megan Drift Spec worked fine for Tony when he was both N/A and boosted.

 

I might do thatt

 

i'm gettin the megan racin spec drift pretty inexpensive too.. i got the headers they work beautiful.. or they did work beautiful lol