Has anyone checked with Chrysler Engineering? I had a couple of Buddies that used to go to Detroit to the Engineering office and poke around in the early '80's. They got quite a bit of info back then. There has to be some type of archive blue print? They used to bring back some cool parts, NOS bought cheap. For instance, 70 B body tall pistol grip shifters brand new for $ 7.00 each. They told me there was 55 gallon drums with 69 Road Runner dash tachs in them. I would say anyone who has an In with the Higher ups, could still turn something.