Maybe league hosts can set the car era. This will affect livery and stats. The eras are 2000 (V10 Era), 2006 (V8 Complex Era), 2009 (V8 Simple Era), 2014 (V6 Early Era), 2017 (V6 2nd Gen without Halo), 2018 (V6 Halo Era) and finally 2022 (V6 3rd Gen)