Rocky Mountain was it. They started out with A body and added the '66 '67 B dashes. They were machined aluminum and nice but the owner or RMD was a reluctant businessman. He had a real job and did dashes on the side. His lead time grew and he did try to sell the company but I think it finally collapsed and he gave up. I haven't seen one in I bet 6yrs now and never seen one personally sell as a secondary used item. If you google Rocky Mountain dashes you can find some images of what they looked like