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your best bet is to look around this section on the forum http://www.g6ownersclub.com/forum/forumdisplay.php?f=16
youll see that there are only a few choices in cat backs: magnaflow, GMPP, GT-R, or go custom.
youll see that there are only a few choices in cat backs: magnaflow, GMPP, GT-R, or go custom.
