Years ago I had one of my boats at Cape Marina in Cape Canaveral for about 14 months doing a refurb on it. There was another boat in the yard, and old wooden Chris Craft about 32 feet long. It was a real POS, and the guy was living aboard with his wife and 5 kids. It was up on the hard, like mine, so I got to watch the progress he was making on it.
One thing he did was build a room up top out of plywood, where the flybridge used to be. It made it top heavy, and was just a big ole box up there. But the funniest thing was that he couldn't afford a marine engine for it, so he transplanted a Rambler V8 into it, complete with automatic transmission!
He didn't have normal water cooled exhaust on it, but he just ran two tailpipes out of the manifolds straight up into the air, higher than even the room on top. It reminded me of those buses you see in Mexico with big stacks.
Everybody couldn't wait for the day he would launch it, and I was lucky enough to be there that day. After the sling lift dropped him in the water he fired up the Rambler, and started to pull away from the dock. The thing was so top heavy it kept swaying from port to starboard. Slowly he crept away, and after he got about 50 feet the transmission shifted into the next gear.
All of us who were watching almost fell over laughing, but somehow he got it underway!!
Don