WHICH FLYWHEEL

Good evening
I have nearly finished my rebuild of an early 1960 Li 125 with a 175 conversion and 12 volt electronic ignition. It will have the standard Li crank shaft.
Does anyone know of an electronic flywheel that i can use that will fit the thinner standard crank shaft without having to make alterations to the flywheel boss,
i don't want to upgrade the crank shaft.
cheers.
I have nearly finished my rebuild of an early 1960 Li 125 with a 175 conversion and 12 volt electronic ignition. It will have the standard Li crank shaft.
Does anyone know of an electronic flywheel that i can use that will fit the thinner standard crank shaft without having to make alterations to the flywheel boss,
i don't want to upgrade the crank shaft.
cheers.