how do I adapt 5x4 with 1/2"X20 stud to SS cragars

805moparkid said
the hubs are aluminum and threaded...

I saw where they were threaded but no one had said they were aluminum. I would be on Wilwood to machine the correct hubs with the 7/16" studs. This is an issue that needs corrected for others also so their engineers need to design the parts correct.