That's wild, because it's only rated at 20/27. . . and the ratings are usually a bit generous. I've averaged ~24mpg since buying my RS, and a header and catback did not noticeably alter my mileage one way or the other.
But yeah, sounds like GT axlebacks with custom fab mid might be a decent choice.
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Small red text that looks curious at first glance but is ultimately inconsequential
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