This file contains 6 mule liveries:

-Humane Labs
-Merryweather
-Bank of America
-USPS
-Rockstar Games
-SecuroServ

HOW TO INSTALL:

Replace this file with the one in the zip file:
Grand Theft Auto V/mods update/x64/dlcpacks/patchday3ng/dlc.rpf/x64/levels/gta5/vehicles.rpf/

Spawn the Mule truck in game and you are good to go!

Remember to do backups of the files before replacing them!

RAGE: Transportation is a recommended mod for these liveries.
https://de.gta5-mods.com/scripts/enraged-trucking