I mean it’s been a reliable engine but the main things to consider is that it’s hard to pull the starter so on a bike it may be tough to not yank the bike over. You won’t be able to hook up a kill switch so you’ll have to have easy assess to the decompression switch for emergency cut off it the engine starts to run away as diesels can do. Lastly the throttle can’t be hooked up in a normal fashion based on the design they have used, I have a video on the throttle set up that will make a little more since. If you’re willing to work with all that it would be unique.
@jwsbackyard6413 If that's the way it came, I'm not surprised. The fuel filters are installed backwards from factory too. I completely disassembled mine right out of the box and rebuilt it.