The thing is ree... there has got to be some 'dead' Tomos motors around somewhere with perfectly useably points ignition setups just sitting on them.
get the flywheel -armature plate (with points and source coil and condensor on it)... and an external coil.
And your off... I bet there are people who visit this forum that have the old parts just collecting dust.
(mind you... I am talking just getting it running... I don't know if you have a 'positive' need for lights and all.)