Hello!
I am not sure to understand your problem because your translation in english is a bit confused...
But it seems that you don't manage to get the car working in game, right?
So, first, download the original cars here: [
gp4racing.jimdo.com]
Inside the archive, you have got 2 versions of the car: Melbourne and Barcelona.
For the textures, several liveries textures from Melbourne to Barcelona and a common textures folder.
Choose one version of the car + one texture livery + all the common textures.
For example, you want to use the Mugello_ Barcelona shape and the barcelona texture livery. So you need these files:
car_sauber_car1_lod_0
car_sauber_car1_lod_1
car_sauber_car1_lod_2
car_sauber_car1_lod_3
car_sauber_car1_lod_4
car_sauber_car2_lod_0
car_sauber_car2_lod_1
car_sauber_car2_lod_2
car_sauber_car2_lod_3
car_sauber_car2_lod_4
+
hi_c31_14 (from the barcelona texture folder)
hi_c31_15 (from the barcelona texture folder)
+
hi_c31_1 (from the common texture folder)
hi_c31_2 (from the common texture folder)
hi_c31_3 (from the common texture folder)
Put these files into your cars.wad and compile your wad with wadupdater or easywad (Zaz Tools)
Then, use team editor to select the shape "Sauber" into the slot you want to use
click on the "apply all changes" button
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