The ignition is a buzz coil made from a 12 volt automotive relay. It is activated from a set of points on the side of the engine.
That is indeed the set of plans you need. The ones I got didn't have the detail for the hit and miss govenor. I designed that from info gathered on the web. It is an easy engine to build and can be done on small equiptment. The flywheels are only 3.5" in dia.