Unfortunately I am very busy these days, maybe in March or April I can continue with this work. The P3 class is finished with its 22 cars.
The P2 class also and updated their skins.
The P1 class are all the cars and their skins, it only remains to adjust the positions of wheels, helmets, arms, etc.
The option to use all 3 classes together on the track also works well (it's fun to race a P3 at the Hungaroring for example) against P2 and P1.
I will try to be able to finish it and if I cannot do it I will share the material so that someone can do it.
Cheers and stay safe
Mods & Tracks for GP4 - [www.mediafire.com]Keeping alive the GP4