Sweetchariot said..
Just fitted a Beta Marine 3 Cyl 30 HP and couldnt be happier. great little engine.
Steve
Beta Marine do a great job of marinizing the Kubota Diesels and Kubotas are legendary for reliability.
Three cylinders is the way to go. Very smooth.
Check these guys out (Diecon) for locally marinized second hand (Jap Import) or new Kubotas.