Lug nuts/wheel studs for old slotted mags

You need to use mag wheel specific lug nuts. Standard cone nuts will NOT work. You should still be able to get them at most auto parts stores.

Here's an example:
http://shop.advanceautoparts.com/we...ions_9100247-P_970_R|GRPWHELAMS_983340829____

These aren't used as much any more, but a lot of older aftermarket wheels used them.