I would think it'd pass, probably be close. The USDM ITR has 10.6:1 compression, so the .2 higher of the ITR pistons in the GSR won't really affect much, and the stage 1 cams are CARB legal, so it should pass
You'll be fine on pump gas too.
__________________
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