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.

    update
    x64
    dlcpacks
    patchday3ng
    dlc.rpf
    x64
    levels
    gta5
    vehicles.rpf

Replace massacro2.ytd

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