On my 46 one piston had blown apart and that was why it was seized. Once I dropped the oil pan and saw the metal in it even I could figure out something bad had happened. It was hard to see as the crank hid a direct look from underneath. I had tried soaking the engine with diesel fuel and transmission fluid to free it and found the engine crank under the seat , but , elbow grease and the crank did not work. I'm afraid I don't see what your problem is.
