Found a way to drive the F2-championship with a proper F2 car:
Copy the AdvancedTrainer.xml file in the Mods/Gem+/gpl65/options folder of your GPL directory into the Mods/Gem+/gpl67/options folder. Then you will have the AdvancedTrainer patch on your Gem+ screen when you choose the EuroF2 carset with 67physics. Click on this box and on the F2-championnat box, chance to Advanced Trainer in the chassis type window of Gem+, then start gpl. Now you can drive the F2-Championship (starting in Snetterton) with a entire F2 car (F2 graphics and AdvancedTrainer physics).
(I would prefer using the 65physics by copying the f2-championnat.xml file into Mods/Gem+/gpl65/options, but this didnt work)
i make a little fix for team and player layout ctd,
have a try with this file, it s beta yet but it could work fine
Please don't forget to save your file before to replace it
Thanks Nadin for the carset & the above for solving my problems with it