Hmmm, I'd be interested to see how the gearbox/transmission copes with the diesel's torque. The Ural/Dnepr gearboxes were originally designed to cope with 24bhp and the big problem they found with swapping engines was the gearboxes and transmission rubber 'donut' failing. They could cope OK with BMW R80 engines - 50bhp, but the R100 70bhp engine was usually too much for it to cope with.