I found a guy locally who said he was willing to try and machine them for me, we have yet to discuss cost. I also found
www.micronitro.com I believe thats the guy I've been talking to. He makes a lot of 1/24th scale custom machined aluminum wheels. He said that he could make my 1/12th scale wheels, It would cost $125 for him to create the CAD and CNC files, then $35 a wheel. Not too outrageous. I'm currently looking for someone who can make the cad and CNC files that would be compatible with his set-up