The Best option hands down, Coupled with a Cold air intake. Sponsors offer package discounts.... I suggest taking it to a shop and having it welded on (about $50) sound gets better over time.
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2012 1LS M6 Black-Sold
2013 2LT M6 BluRay- Sold
2015 1SS 1LE M6 Black-Sold
2021 ZLE A10 Riverside Blue - Awaiting Arrival 01/10
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