I was able to get ahold of a set of the original ultra light racing wheels Datsun used on the 240Z when racing them back in the early 70s. Actually saw the in a picture in a manual from that era. I am having a hard time finding the shank type 12x1.25 lug nuts for them. They aree kinda like the old Crager mags with the round washer. Can I use the acorn style or does anyone know where i can order these from?