Universal to Yanmar
Weighing in at about 10,000 lbs overall we have a Yanmar 2gm 16hp. It moves us very well and has been easy to maintain. I did not do the installation but it looks very straight forward.
We have about 2100 hrs on the engine, it uses no oil and at 2200 rpm''s we use about "1 quart" of fuel per hour.
I would recomment the Yanmar engines in any retrofit.