John, after a raft of S-92 gearboxes cracked at the joint to the airframe, I'm not sure they're easily retrofittable to the H-60 any more once fixes were implemented. In any case, reacting the S-92's head moment on the same bolt pattern as an H-60 hasn't been without problems. I suspect the same would be true for the TGB. Physically pinning up is just one part of compatibility with a new airframe.