Personally I would get Magnaflows for the Gxp...Flowmasters 40s are just to loud and drone like crazy. Magnaflows will increase your tone slightly compared to stock.
If its a 3800 = Borla. LS = Magnaflows.
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12-27-2012
Personally I would get Magnaflows for the Gxp...Flowmasters 40s are just to loud and drone like crazy. Magnaflows will increase your tone slightly compared to stock.
If its a 3800 = Borla. LS = Magnaflows.
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