Reliable, as long as you don't go above the stock LS redline...you say you won't, but you will. I wouldn't lower VTEC, it's just going to hurt the motor and your power. Use an LS timing belt, I'd also use a VTEC oil pump, your LS water pump will be fine. If you choose to go with a GSR water pump use a GSR timing belt.
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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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