You wouldn't be lean with just bolt ons. The only time I have heard of bolt on motors blowing is when contaminants get in the motor/oil and spin bearings...or when people get a sweet ECU chip and try to rev the thing to 8 grand.
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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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