MGB mount
The MGB is bolted directly to 4 frames which form the "box" in the center of the fuselage similar to all other Sikorsky models. There is so much "stuff" around the gear box, I don't recall any doublers in the area....of course its also been 20 years since I last worked on the darn thing! We rebuilt the cranes destryed in the tornadoe in Windsor locks CT...send me a note with an e-mail address and I'll send you a few pictures.