Hi I have one that is brand new built onto an very early Xt disc hub.( Front silver)
I may have another new rim about somewhere but it would probably take me a few days to find out. The wheel was built as a spare and never fitted as the bike was stolen. Send me a PM if either would be of use.
Cheers Kit
Don't spose I can tempt you with a pair of Sun Double Track rims? Exactly the same as D321 but black.
I've got 2 pairs, one destined for my sts, the other going spare.