Jon, where are you having the haul-out done? FWIW, I had to have a transmission repair that required removal and replacement a few years ago on a previous boat, actually with the same engines as yours but straight drive. This was on an aft cabin motor yacht where removal of the deck house would have been an even greater chore than on yours. Anyway, I had this work done at Herrington Harbour North using Cook Marine. They had a variety of lifting frames and were able to accomplish the work pretty quickly and without Cummins involvement. So, I thought this might be useful to you if you're not entirely set on the yard you're going to use.