Do you know what sizes you need? Not sure how to work out dizzy drive shims... Always reused the one/s I've pulled out. but you need to calculate what three shims you need to make the right endplay... I have some nos shims and some used ones in many sizes. Happy to help you out with the three you need if I have them?
Below might help with a choice of what you need and what us chaps would be looking for in our parts stashes. The backlash cannot be changed as the relationship between the crank and distributor drive bores are fixed but worth checking for wear, especially in a Mag case.
