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19iroc88
04-02-2009, 07:07 PM
just wondering if anyone knows the inlet and outlet diameters of a stock cat on a 3rd gen

88' 350 tpi

Fast92RS
04-02-2009, 07:18 PM
Ssome where 3" in and 3" out and some were 2 1/2" in and out. Most likely you have a 3" one.

19iroc88
04-02-2009, 07:47 PM
ok thanks man