So, it appears the daily races in Gran Turismo for next for next week have been announced.
Gr.3 Red Bull Ring track, 5 laps, hard tyres no wear or fuel use.
Gr.4 Nurburring 24H track, 2 laps hard tyres, fuel 2x, tyres 5x.
Might stick with the Gr.3 with some modification but I'm open to suggestions still for the Gr.4.