I'm pretty sure they went out of business or theyre at least discontinued. More Than Tires had some out in Carlisle a few years back and that was the last I'd seen of them. When I called to try and order them a year or so later, they had no stock.
i was looking into this a few months ago. they are no longer available as broadway classics, but are now made and sold as... shadow (?) or something like that. i'm sure i have this info written down somewhere, i'll get back tomorrow.