My Wife and I saw the car and talked with Carl T. for quite a while at the 2007 R/S auction. Amazing piece of Chevrolet history with some very interesting stories! Apparently Smokey had a lot of research time into the development of these heads, and other projects, but Chevrolet wanted to shift direction more to fuel economy and smog control. To compensate him, Chevrolet gave him a few of these engines-far less than he thought he was owed.
Don