I found THIS link which shows you (with photo's) how to change your Points Dizzy to an Electronic Dizzy. Crossflow only.

I found this more useful IMHO:
"How to upgrade your Crossflow engine to Electronic Ignition for £ 20.00 - Chris Laycock"
It's on the 'Locust Enthusiasts Club' forum.

I have a distributor for sale if anyone wants.... £20 .. NO MORE POINTS
Bettter starting and fuel economy... go on u know u want one