I believe this is what I want to do. I don't need anything else but to just be able to 'hang' my wheels and mount with lug nuts. Will be looking into these for sure. I believe the part that screws into the hub is 12 x 1.5 so thats where I'll start. Then I will have to make sure the lugnuts are conical, and the bolt part doesn't protrude past where the cap snaps on.