: Before adding anything, copy your entire game installation folder to a safe location. This lets you revert easily if a mod causes crashes.

: Copy these files and paste them into the Vehicles folder inside your game directory, choosing "Replace" when prompted. 2. Graphics and Texture Mods

: Open the downloaded archive (usually .zip or .7z ) and look for files named like VEH_XXXXX_HI and VEH_XXXXX_LO .