I probably wouldn't run a stock blocked s2k to 12psi...it COULD be done with the right setup, fuel management, and engine management...and an awesome tuner. But, who knows how long it would last...and there's a small margin of error there.
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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