Requirements::

-ScripthookV
https://www.gta5-mods.com/tools/script-hook-v

-Menyoo
https://www.gta5-mods.com/scripts/menyoo-pc-sp

Simple Zombies
https://www.gta5-mods.com/scripts/simple-zombies

To install Place Ztruck.xml to GTAV/menyooStuff/Vehicle, then load it with Menyoo/Vehicles/Saved vehicles, then wait a few seconds and it will load.