Its easy to update your gp4.
All cars are stored in cars.wad file. Cockpit, steering wheels also. Pitcrews are stored in anim.wad and visors are in each track.wad file.
Download good performances and put them into gp4 with gp4edit v0.12 by marc aarts.
You need to extract the cars.wad file to a folder. Do this with gp4master v1.2. Go to wad workshop, open the cars.wad file and extract it to a folder. Then put your downloads in it and pack it back to cars.wad file.
Carshapes and Textures are in a subfolder of cars.wad file called cars.
If you updated your gp4 to v1.02 use util patcher by tet to patch gp4master v1.2. Because gp4master wont work with patched gp4 version.
Allways use a encrypted gp4.exe and make backups every time.
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