This can be done with any aftermarket ignition on an early bike. i've seen some stuff posted and it's incredible to say the least. .. and not in the eye candy kind of way.
you can use the original bakelite junction box. The voltage regulator gets installed inside the chassis using the glovebox cowl screw. no need to drill extra holes or any kind of that nonsense.
I use double crimped terminals on the wires just like the originals.
hope this inspires some folks.