A little update for anyone still following this build. I got the holes drilled for the lug bolts. The wheel will be 3 parts. The outer ring, the wheel center, and then the hub mount. They holes for the lug bolts are overdrilled. The holes that will be drilled in the hub mount will be smaller for the actual lug bolts. My RTV showed up yesterday so once I get the wheel cleaned up it will be cast, along with the sectioned rear bumper.