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Old 10-18-2008, 12:15 PM   #2
Okie doke
Crowley's Avatar
Drives: 2012 GT500
Join Date: Sep 2008
Location: McKinney Texas
Posts: 3,569
I think GMPP offers a performance catback .. I for one will hold out in the xpipe / catback department until we have more aftermarket choices and then pick the combo that has the best sound ..

I may do the GMPP Shorty Headers though ..

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