I know, nothing exciting, been done before..
Just to say how painless it was, all mods done with hand tools or a bench drill.
Standard Rcexl ignition and opto isolator.
Standard head button tapped out to 10mm for CM6 plug. Copper washer under plug to limit protrusion of plug into combustion chamber. May get a new button machined one day as thread is not awfully deep and it would do away with the need for the copper washer.
Head fins cut back using a Starrett hole saw so as to allow plug socket to fit.
Spacer for the pickup started life as a 2" x 5/16" flat stock. Sliced off a 1/2" wide strip and persuaded it into shape using sockets, hammers and a vice with the jaws open. Crankcase at this area is tapered so had to relieve the back edge so the pickup was running parallel to the crank.
Chinese Walbro clone for 12 USD as the original DelOrto's have no choke. Soldered up the bleed hole in the choke plate to give more suck. Modified the choke and throttle arms by welding on sheet stock to the originals.

Starts well, crisp throttle response, seems to pull like a train on a Biela 18 x 10.
Tacho batteries flat so no figures.
Test flights soon.