Paste the .ytd file in:

Grand Theft Auto V\update\x64\dlcpacks\patchday2ng\dlc.rpf\x64\levels\gta5\vehicles.rpf\

Grand Theft Auto V\x64w.rpf\dlcpacks\mpbusiness2\dlc.rpf\x64\levels\gta5\vehicles\mpb2vehicles.rpf\