It takes less than a minute with a flap wheel to convert an old 216 balancer to a slip fit alignment tool but if one wants to involve machine tools the method Denny Graham shared which included a provision for drilling/tapping the crank can be seen here:

https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=628736

Maybe Denny is already living off the royalty of those.


1952 1300 Canadian 1/2 ton restomod
You Tube