With stock cams you will be lucky to get any power out of cam gears, it's not worth it until you get bigger cams. Pulley kits you'll be lucky to get 2-3 hp out of them.
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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