Just a thought... I'm assuming you are looking for a wider rim. Why don't you have the current rims widened by and inch or and inch and a half then have them powder coated or painted? I had a company in PA quote $75 a wheel to widen the steel rims by an inch. I'd be happy to send you their contact info assuming I can find it! Send me a pm with your email if you are interested.
Otherwise, good luck with the search. It took me nearly two years to locate my NAS 110 wheels.