Don’t know if this link will work https://www.napaonline.com/en/search?text=Distributor&referer=v2 but go to napas web site, set vehicle to 1964 chevy II and search for distributor. They’ve got full distributors and points etc available. Easy peasy. They put them in a zillion cars trucks boats and fork lifts. Shouldn’t be hard. and it’ll be fine with only Mechanical advance