Might as well just swap the tranny, it'll be cheaper...then you can sell your LS tranny. But yes, it is possible to swap the GSR gears into an LS case, but the question is why. For $700 a good GSR tranny can be had, and then you can sell your LS for $4-500. That saves you the trouble of having to buy the GSR internals, and paying labor to swap the parts into your case....just unnecessary headache.
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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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