classic industries has magnaflow glasspacks: 18" shell/22" length/4" dia/3" inlet/outlet #18129 $51.99 ea with 15% off paying with visa "classic?". what YO7 said I'd add those before messing with the rest of the system. I've never run flowmasters but the flowbastards moniker the one guy put on em way back always stuck in my head, that they were way too noisy. yeah you gotta change something for your peace of mind