Well I took an old hub from a b-body drum brake system. I made a few drill fixtures so now I can redrill the 380mm rotors. The rotor diameter is about .060 larger than the hub register, so I took some safety wire and wrapped it through the original bolt holes. It now has a nice fit and is centered. Next, I need to figure out what drill bit I need to drill the holes to. I am thinking that I may use a roto broach to bore the holes. I am making progress, not as fast as I would like but its still progress. Tim