INSTALLATION: 

Place the futo.ytf, futo_hi.ytf and both the ytd files into in this location: 
update\x64\dlcpacks\patchday3ng\dlc.rpf\x64\levels\gta5\vehicles.rpf\ 

And then place futo_mods into this location:
update\x64\dlcpacks\patchday1ng\dlc.rpf\x64\levels\patchday1ng\vehiclemods