If the Crank diameter and taper is the same that would be a great start. The Midwest Supercub and Lakota Command flywheels are both adjustable. They have a steel hub that mounts on the crank and the flywheel is aluminum (similar to ARC's wheels) and bolts thru slotted holes to the hub. Once the proper timing is figured out, the hub could possibly be drilled and tapped for a new location. The flywheel diameter and starter ring gear would be the next adventure. I have a MV-20 on my Bench and I'm about to order a Lakota Flywheel for my Command. I'll be checking all these things before I install the wheel on the Command.
Jack Jones
Hard Case Racing