[rotorwrench]

There are still a lot of old model A&B 4-banger motors out there. Model A guys generally have a spare or know someone who does. The Burtz block in kit form would be more affordable than some. Ford also sold the engines as industrial engines which were used in air compressors, saw mills, water pumps, and a multitude of other agricultural & industrial applications. They were made up into the early 1940s just before WWII.