This is something I have considered working on for quite a while. At the moment I am only working on it out of pure curiosity, just to see what the real circuit would have been like to drive, and to see how AC might handle the physical size, so no guarantees that it will ever get released.
Please, please, for god sake, if you find the motivation, do the Sachsenring 1967 please. It would be so appreciated by many!