Well a B16 head isn't an upgrade...and ITR heads are overpriced. You should get a bare GSR head, and get it ported and throw new internals into it...if you want a built head. More cost effective, and better performance.
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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
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