I am not sure, but I was under the impression that the Differential is the same, the only difference is the ring and pinion. However the axles are different/upgraded but I don't know if this will be a direct bolt-in or require a hub change as mentioned above.
2011 IBM 2SS/RS - LS3/M6 - Grey Interior
Full bolt-ons + TSP 229/236, 112 LSA
Tuned by BROOKS PERFORMANCE
BMR Stage 3 suspension
Vertini Magic Concave, 20x8.5-20x10