Noob Cat question [Archive] - GrandAmGT.com Forum
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Jake
03-10-2007, 11:14 PM
How big is the In/Out on stock 99 v6 grand am's? 2.25" or 2.5"
lone_wolf025
03-10-2007, 11:16 PM
2.25"
Jake
03-10-2007, 11:17 PM
Ty, *embarrased face* Then the pipes are 2" after the cat/resonator correct?
silvergtjrad
03-11-2007, 09:37 AM
I believe they are 2.25 all the way back