Great Idea for sure, but man the tolerances on these is unbelivably tight (I'm guessing you already know this) but the rotors of a supuercharger are nothing short of artwork. I would gladly send you a set of rotors if I had some to see what you could mill. I don't know if you could ever make them cost efficient either; 2 cylinders of aluminum like that would be 2 hundred bucks plus your time I would have to think.
Mods: ZZP stage 3, 2.9 pulley, prefab pcm, 60lbers, AEM gauges, KandN CAI, SPEC stage 3+, ZZP S3 heat exchanger
ZZP long tube header, Strut bar, ZZP rear mount, Progress rear sway bar, Redline Tuning hood struts freshly installed.