Just a heads up...
There are yards overflowing with decent small HP diesels out there. All off lease turf equipment! Yanmars on many as well as Kubotas. 30+ HP.
Turbos? Me, I'd rather a naturally aspirated unit of such low HP. Lots of expense for marginally more HP. If weight was a critical factor maybe...
As long as rotation is proper you can usually mount it with some effort but if you can weld, cut, and most importantly measure it's not rocket science. LoveJoys make shaft diameters differences a small factor...Within reason obviously!
Stop by your local golf course with a dozen donuts and see what he's got in his boneyard. You likely will find a friend.