I cut off my gibson muff and went with a flowmaster 40 sires, Sounds better.

Did the flow master bolt right in, or did you have to modify something? I ask because I was going to try the same thing. Is the Flow the same length as the Gibson, and where do the pipes enter and exit the Flow?

If ya got a gibson cat back, it is ez to do. I had a gibson cat back, and after a few weeks of haveing it I cut the tail pipe off and put a turn down pipe on wright after the muff. That made it sound better. But I need mo!!! I orderd a flowmaster 40 sires(not the delta) 2 1/2 in and out, Off set in and center out. I just cut the gibson off(with a hack saw), Then the flow just sliped on. Then I put on a dump pipe(turn down) wright after the muff. The gibson muff is longer than the flow. But with the turn down pipe on, I just used the hanger from the gibson and bolted it up to the turn down. Sounds much DEEPER now!!!!!! I like the flowmaster alot better than the gibson. I wish I had just saved my money and got one in the frist place.

So the gibson is a waste of money? I was thining of getting it because nobody around where i live has one. A lot of ppl have flows and i was gonna get somethin different. But tif the flow is better i wil be happy not to have to spend as much.

Best thing for the money is to go get a flowmaster 40 sires(or what ever ya like) welded on with a turn down pipe!!!!!! Cheaper than a cat back!!!!!! :D