File with fixes carcols, carvariations, handling, vehicles should be placed here: Grand Theft Auto V/update/x64/dlcpacks/NFSPACK/DLC.rpf/data
Vehicles bountyhunter (Z06), COPGTO2, COPMIDSIZE2, COPSPORTHENCH2, COPSUVL2, COPSUV2 must be installed in the following directory: Grand Theft Auto V/update/x64/dlcpacks/NFSPACK/DLC.rpf/x64/levels/gta5/vehicles.rpf
Then try to see if it works or not. If it works, you can play! But if the file has an error, please let me know, I will fix it as soon as possible. Thank you! Have a nice game!