Re: Gibson Cat-back on 4.7 GC 4x4's
I had a Gibson on an Expedition a couple years back. I liked it, but it wasn't as aggressive in sound as I wanted. I chose a Dynomax for this jeep for that reason. I like the straight thru design of the Dynomax and it does have the most flow available. As I posted before, their flange to the converter isn't the best quality. It was leaking, so I applied a bead of high temp JB weld type stuff around before re-mating it to fix that. Gibson quality is high as with most national brands available. Engines need to breath and exhale, factory parts restrict this natural process. Whatever you bolt up will be fine I'm sure.