Had some custom muffler deletes installed by a local muffler shop. They cost me $40 dollars total and I saved 22 pounds. My friend at work gave me his stock mufflers from his 2007 GT to cut up, so I still have my stock mufflers. I just couldn't see paying $400+ for a set of muffler deletes from Roush, etc. I am very pleased with the results.
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