Read Rvw to Hopefully Eliminate the Same Gibson Exhaust Issue
Gibson's cat back exh sys was incomplete.Needed a 23" extension pipe from the resonator. Also,existing hangers were not able to be used instead had to weld on the provided new hangers.Also, brake line needed to be moved out of the way. Gibson tech.service stated there were (3) different exhaust arrangements but the Walker exhaust book at our local parts store showed (5) different ones for a 2004 Ford F-150(SuperCab/6.5'bed).Flowmaster originally installed(included extension pipe & Ford's hangers
Small install problems but a really nice sound..
I had the cat back system professionally installed. I have done my own install previously but this would have been tough in the driveway. The supports were not wielded the same distance on both pipes so one had to be moved so the tips were equal distance on each side... and the rear most hangers were too long to fit.. so they had to be trimmed... LOVE the sound, bit louder than expected but really nice low tone for an EB mustang. minimal drone on the hwy and the car seems a bit peppier!!