I just put my BBK H-pipe with cats on yesterday. Had a few fit problems. The 2 1/2" pipe didn't match up to my 2 1/4" stock cat back(this one I knew). My car is an automatic and the pipe blocked the shift linkage from moving and therefore shifter wouldn't move and car wouldn't go into gear. Had to pound down the spot on the pipe with a ball peen hammer. Also had to use plumbers strap to hold it up at the hangers. It didn't work with the stock setup. But despite these problems I still love it. There is rarely a perfect fit with aftermarket parts. Just part of the game.
Vince
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1997 Mustang GT
auto tranny
3.55 gears
Flowmaster mufflers
K&N filter (silencer removed)
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