anybody know what size hex is on the end of the shaft of a 230 out of a 1941 dodge WF-32 1.5T truck? the engine is stuck, and i wanted to try rocking it, bu i could not find a fitting size in my arsenal. i would just measure it, but i cannot get to it to see it, just feel it. i dont want to go under the truck, it is sitting right over a nice mound of rabbit sh!t, and it does not roll, so thats not happening. could somebody find a pic of their hex on the front for me? i think the engine is a p-18, but not sure. thanks in advance!