I can't think of anyone doing solid stainless in LH off hand..Hmmmmmm..
I came across an Italian company doing some odd ball lug nuts (I had talked to them out at SEMA about some certain ones some customers in Oz were hunting) and I think they said about doing some of their line in stainless. They could probably make them but would want to do a pretty large batch to make it worth while at all..
My main supplier does not do them I know and neither does the secondary place I get a few from when my main place doesn't have them.
If you need some chrome ones just to get you by for now, let me know and I can send you off a new set.