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I have a 2000 3.8L firebird, and am looking at an aftermarket cat. The factory exhaust is 2.5", isn't it?
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2000 3.8L Firebird, Silver Metallic<br /><br />\"Yes, London. You know, fish, chips, cup o\' tea, bad food, worse weather, Mary f***in\' Poppins, London!!\" -
Cat is 3" in, 2.25" out. After the cat it stays 2.25"
If you don't have any other exhaust mods, don't waste your money on a cat.
BTW, searching the forum for "stock cat size" or "stock piping size" quickly results in finding the answer. ;)
[ September 06, 2003: Message edited by: 98Camaro3.8 ]</p>Matt
1998 Mystic Teal Camaro M5
Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.
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