At this point, I'm going to stay with my 218 block and head and use the crank, rods, and flywheel (and, anything else I discover I need along the way) from the 230. I'm reasonably sure these are both original engines, so I should be able to determine the real differences between a 218 and a 230. My 218 is a three speed with fluid drive. I'm hoping I can still use the 218 bellhousing because the pedal attachment is different on my 230, because it's a '55. By then they had moved the pedals to the frame rail.