Yes it's an old motor. Needs which needs new pinions and new crankpin, I could repair the original flywheels[they are forgings] and recover the pinons. But it's not much more work to make new flywheels and pinions? It would be rude not to stroke it. I will be able to use cheaper bearings, which will probably pay for the material and heat treatment. Stroking it is going to mean paring the area around the pin down quite a bit to balance it, so the extra expense of an alloy steel over EN8 is probably worth it.