09 CHEVY PU HD with a 3 1/2 system, we cut the y pipe and did dual into the flowmaster dual inlet hd muffler. Worked out good. Sounded really good!
09 CHEVY PU HD with a 3 1/2 system, we cut the y pipe and did dual into the flowmaster dual inlet hd muffler. Worked out good. Sounded really good!
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