That sucks. Unfortunately, buying used cars is considered buying "as-is." While it's highly unethical to do what this guy did, it's legal and there's nothing you can do to get your money back.
Sorry man
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2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget