Talking of the R-One, I hope you’ve noticed that we’re following your lead in Europe by having series for more modern cars. Masters have one series here-
http://www.mastershistoricracing.com.../championship/ and another your side of the pond-
http://www.mastershistoricracing.com.../championship/
France-based Peter Auto have their own take as well......
https://peterauto.peter.fr/en/grids/...ing-legends-2/
Certainly get some interesting cars!