I know for a fact that Cadillac engines were installed in some of the wooden boats used in inland waterways in the 30s and possibly the 40s as remember one from many years ago from the 1950s or 1960s. It may have been a Chris Craft, but I could be wrong - but it was a wooden open boat and this was long before the fiberglass boats. I believe it was in the Thousand Islands area of the St. Lawrewce Seaway. I usually attach pictures to my posts, but this time cannot come up with one.
Fred