I run NGK coppers, replace every 10k or so...as Chanc said, make sure you gap them...they do not come pregapped. You'll be looking for a BKR6E plug.
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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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