I was waiting if anyone else commented on this, since I have zero first hand knowledge. I will say that the YouTube channel Farmcraft101 just redid his injectors on a fuel pincher for the exact same reason (fuel in the oil). He also changed the fuel pump, reset the governor, and set the output on the injectors. He was able to source the tools, but discussed what would be needed to work on it without the specific tools.
it looked like a PITA to me, but could see how it would be worth it vs trying to repower a truck with a different engine.