recently picked up a heald hauler, fair shape the engine does not have hardly any of the tins for the motor. tore it down cylinder walls are scored pretty bad, bore is about 3.437 with calipers as i dont have inside mics to do it proper. has an aluminum cylinder, 2 crankshaft counter balancers in pto side case, crank has bushings no bearings just trying to figure year and size to maybe source needed pieces to maybe redo this to put back in all help is appreciated thanks