I've got to assume that Bob Lacey, I believe the owner of Vintage, has had to have seen at least one or two of these ridiculous magnesium wheel threads. He's probably staying away because isn't pouring a magnesium wheel a little different than an aluminum wheel?
I've been chasing a set for three plus years now. I think my best bet may be finding an NOS set on eBay, but then I'm competing with the CSX3000 owners, which could/will be problematic.