i know dark-side has a thread going for this, but a few weeks ago i was talking with my guys at the machine shop here in town about doing some of these up as well. no pics yet but they have a program written for it, the tools and metal have been ordered, and everything will be ready to go very soon. i don't want to step on dark-sides toes but these wheels were set in motion around the same time as his were.
pricing: $10 per stud shipped in the US, or $50 for a set of six. $5 more for international shipping for a full set.
*edit* the plan is for them to come pre-threaded to fit either a 6-32 or 8-32 machine screw (to be determined which size)
it's been coming for some time, but here are the pics!