Hello,

before you start to edit your files, i recommend this link: http://openiv.com/?p=1132
How to use OpenIV “mods” folder and keep your original GTA V files safe.
If you are followed the link and have created a mods folder navigate thru your mods folder.

Start OpenIV navigate to mods folder, or the original files.

    x64w.rpf
    dlcpacks
    mpindependence
    dlc.rpf
    x64
    levels
    gta5
    vehicles
    mpindependencevehicles.rpf 

Replace monster.ytd and monster+hi.ytd


Have Fun with it.
Follow me on GTA5mods.com for newest updates.
https://gta5-mods.com/users/Rasputin