Thanks for the info guys. I spoke with Rob at Phat - they are making another run "soon" but to be honest, the design just looks butt ugly on top of the stock C6 column. Other companies make great looking hubs that are much shorter. The advantage to that is that you can run any number of standard add-ons like a quick release or spacer. The Phat one uses some of that space in it's design.

I really like the NRG hubs but they also don't have one for a c6. I spoke with them and I will probably use one of theirs if I can find someone to machine a larger spline.

The guys with late model GTO's have the same issue (different spline count also).

Yes, the option to mount a "plate" on the base of the stock wheel is possible with a hole cut to access the nut on top of the splined shaft.

Can anyone machine something to fit a splined shaft?