Do a Borla 60606 secondary cat delete X-pipe in to a set of Corsa Extreme axle-back mufflers. It will rival a GT350... I had it on my SS 1LE and it was outrageous, but too loud on cold starts at 6:30 AM in my condo garage. I switched to an NPP Borla S-Type and like the sound a lot but don’t love it like I did the Corsa. Drive with your rear seats folded down and you get 2X the interior noise form the exhaust if thats what you’re looking for.
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