Coker bought Wheel Vintiques, and maybe Stockton Wheel as well.
So you either deal with Coker or you can try Ebay & etc.
FWIW, a set of Magnum wheels I bought from Coker a few years ago had one that the center was crooked in the barrel by nearly 1/4".
They told me that "no, we don't check them before shipping" !
Maybe they do now, seems like Wheelmaking 101 to me.
More recently, I bought a set of Magnums on Ebay - turned out to be the Holley company - and they were within spec, and less expensive than Coker.