Hammer speaks the truth. I would recommend installing a 2.5" H- or X-pipe with high flow cats. This should give you an extra 8-10 HP and a more aggressive tone. If you are also considering HP mufflers, wait until you install the pipe and see what it is going to sound like. I can tell you from experience that an offroad (no cats) pipe makes the exhaust very loud even with factory mufflers!
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'97 Cobra, Rio Red, MAC Cold Air Kit, 3.73s, NGK V-Power
BBK H-pipe w/cats (Coming Soon!!)
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