The problem isn't the pump or the HP. It's the chassis. Backhoes are brutal on tractors. More than one has been broken in half. If you do put a loader on, it'll need to be a full subframe model. The problem is that nobody makes a subframe backhoe for a foreign Yanmar. Frankly, that's proably true for any grey market tractor. That said, if you are handy, you could buy a backhoe and build the subframe to fit the tractor. I did it for my loader, and came to realize just how big the project really was. The bottom line is that you might just be better off with a tractor that is purpose built for a loader, or an American model where one could be mounted. Both of these options will certainly cost more than a good Yanmar, but will be cheaper than trying to find somebody who can weld a iron transmission housing.