Ken, it seems as though Catalina installed variants based on what Universal/Westerbeke delivered as pre-assembled engine, mount, & transmission packages. Fortunately our M35A(C) had an easy to remove transmission, and damper plate without having to remove the bell housing. I had planned on using a Florida based company for new mounts, but back to back hurricanes set the company , and it's employees several months back in their ability to supply my somewhat custom mounts. Hopefully the R&D mounts, and damper plate, and rebuilt transmission will provide us with many years of smooth motoring and sailing.
John
John