His new rims have the bevel for acorn nuts. Even brand new wheels these days are centered with the nuts. More I thought about this the more I think it is a 4wd rim. I remember my older Bronco in college. There were hub size differences in rims for 2wd and 4wd. A 4wd rim would fit on a 2wd, but the 2wd rim would not fit on the 4wd.