Guys over at Jerry's Muffler shop in Lewisville did an awesome job fixing my exhaust (and four wheel alignment/bumpsteer with the newly installed IRS). He was recommended over at dfwmustangs and I would definitely extend that recommendation
BEFORE (cockeyed as hell):
AFTER:
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03 DSG Mach 1
Stroked/Forged, Heads, Cams, Long Runner Intake, Built Cobra IRS, Cobra Fuel System