Copy the .ytd files and paste them in :

Grand Theft Auto V\x64e.rpf\levels\gta5\vehicles.rpf\
Grand Theft Auto V\update\x64\dlcpacks\patchday3ng\dlc.rpf\x64\levels\gta5\vehicles.rpf\
Grand Theft Auto V\update\x64\dlcpacks\patchday1ng\dlc.rpf\x64\txd_patches.rpf\
Grand Theft Auto V\x64w.rpf\dlcpacks\mphipster\dlc.rpf\x64\levels\gta5\vehicles\mphipstervehicles.rpf\

