I have the Farymann A30 in my '74 2-29. It is a very well designed and built engine. It was designed to be rebuilt several times. All of the parts are still available from many sources. It makes 10 hp at 2,500 rpm and that is under load for a 100% duty cycle. (continuous operation at 68 degrees). This engine with the 2:1 transmission and the standard 12" prop at 6" pitch will move the boat at 5 kts. 4.5 with wind and waves, and that's good enough fo me. To move her at hull speed, 6.7 kts, you would need 10 more hp, 20 hp. That's twice the engine for 1.7 kts. This is a solid engine. I would keep it and rebuild it, but, good luck with whatever you decide. The link below is the place where I get all my parts.