Originally Posted by B18C3GSR
so the C1 is US spec and C5 is Jap spec?
B18C1 is the USDM GSR
B18C5 is the USDM Type R
B18C can be JDM GSR or Type R...you can tell the difference on the head and intake manifold.
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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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