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Malo83 · 12-29-2017, 12:11 PM

Go with Magnaflow cats, they flow the best, have a 3" single exhaust on my 83 with a Magnaflow.

12-29-2017, 12:11 PM	#2
Malo83 Cruzzzn' Vet Join Date: Jan 2005 Location: Porterville,Ca. Posts: 1,918	Re: Exhaust help! 5.7 vortec plugged cats..worth paying for larger diameter replaceme Go with Magnaflow cats, they flow the best, have a 3" single exhaust on my 83 with a Magnaflow.