Whenever you're hyped or not about Fallout 76 or you're a fan of the series in general then this is the way to go XD

Installation (EASY):
Copy the "Mod" folder (recommended to change the folder name to avoid conflicts with other mods) inside ModLoader Folder

Installation (HARD):
Use an IMG editor, open "Player.IMG" file inside GTA SA > models
Find "tshirtheatwht.TXD" and replace it with the one from the mod
Rebuild archive and open the game and find a vault otherwise you're gonna be history...