A Diesel Engine for the Diesel Dolphin

Several years ago my brother and I met some very nice folks at a marina in Deale, MD.  They gave me a 2 cylinder Universal Diesel engine that wasn't running.  My brother is very mechanically inclined and was able to fix the engine up for about $30 worth of parts.  What a great little engine!  The engine is 11hp and is a little more power than what this boat is designed for so what I have done is increased the frame thicknesses and I'm using 3/8" marine plywood instead of 1/4" that the original design calls for to compensate.  Nothing beats the sound of a smooth running diesel engine.  Call me whacky, but I like the sound that the valves make when they tap.