Got any pics of the engine compartment, Charlie? Is it big enough to glass in some motor mounts and run a 1100 or 1200 Yami?
I like Rick's idea of splitting the hull, too. Open 'er up, add some 4" or 6" PVC scuppers, some 3,600 GPH bilge pumps (the 5,000 GPH's air-lock), You could run six...