I have that Hot Rod magazine around somewhere that they cover the build of that car in. Its pretty sick. I imagine the wheels are powdercoated, but I can't say for sure. You can pretty much do ANY finish with powdercoating, whereas anodizing is like chemically staining the metal (changing the metal's chemical makeup at the surface), so the finish is pretty much always the same, regardless of color.
That said, I've heard that a special process has to be used to powdercoat wheels without weakening the aluminum, since powdercoating involves baking the wheels to temperatures close to the aluminum's annealing temp, but there seems to be some controversy around that.
That said, I've heard that a special process has to be used to powdercoat wheels without weakening the aluminum, since powdercoating involves baking the wheels to temperatures close to the aluminum's annealing temp, but there seems to be some controversy around that.