Hi,
I recently seen one of these on Ebay. It went for more then my budget, so I didn't get it. Since I was bidding on it I did some research and found that it is a very expensive saw engine. This usually means very high quality. They use them to cut concrete and chop out openings for windows during construction. They cost from $600 to a grand new. It should make a great high torque motor. All of the usual chain saw conversion technics apply, since it will have a flywheel shaft and a clutch/oil pump shaft. Good luck.

Dave