GRAND THEFT AUTO V
GTA 5 Flatbed with 6 liverys based on Los Angeles area towing services with the exception of the Los Santos skin

Requirements:
You must download Trains, Trucks, Emergency & Service Vehicle Templates 2.5 by Thero on 5Mods - https://www.gta5-mods.com/vehicles/air-port-service-and-service-vehicles-template-pack for the Flatbed meshes, the vanilla meshes will not appear correctly.

Installation:
Using OpenIV, navigate to Grand Theft Auto V then go to the following locations in the folder structure:

mods/x64e.rpf/levels/gta5/vehicles.rpf

mods/update/update.rpf/common/data/levels/gta5/vehicles.meta

To have all liverys appear in-game export the vehicles.meta and add to the <flags> line FLAG_HAS_LIVERY

As always, make a backup before installing...

-Credits- 
Vehicles Created by Rockstar Games 

Vehicles Templated By Thero 
https://www.gta5-mods.com/vehicles/gta-4-vanilla-cars-templated