Go to your gta V main directory and copy and paste the 4  given files: dinput8.dll > GTA V Ufuse 4X4 Trainer PC V2.0.asi > GTA V Ufuse 4X4 Trainer PC V2.0.ini > ScriptHookV.dll

Press the "F4" key to open the menu and use the numpad keys to navigate and choose things. 
Numpad8 = UP
Numpad2 = DOWN
Numpad4 = LEFT
Numpad6 = RIGHT
Numpad5 = SELECT/ENTER
You can change the keycodes to open the menu or navigate the menu by editing the .ini file with any desired key from:
http://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes 
You can change the hotkey to open the menu by editing the .ini file with a any desired key from: 
https://msdn.microsoft.com/en-us/library/windows/desktop/dd375731%28v=vs.85%29.aspx 

Updates: 
. Beta 1
- Added Minigames BETA (Zombie Generator, Clown Generator, Dog Attack, Alien Generator). 
- Added Max Upgrades for Vehicles. 
- Added Mobile Radio. 
- Fixed Player Model naming and rearranged menu a little bit. 

V1.1
- Fixed Player Options. 
- Fixed World Options.
- Added Notifications. 
- Added .ini file for custom menu hotkey. 
- Added toggle for Minigames (Still needs to be fixed)
- Fixed some vehicle glitches. 
Note: Toggle a generator ON for only 3-4 seconds then stop or else it will keep spawning and your game will crash.

V2.0
- New better customizable .ini file. You can now edit the navigation keys.
- Remade new menu look.
- Rearranged menu items.
- Passenger Seat Menu.
- Clean Car Option.
- New Weapon Options.
- Menu Back Sound.
- Notifications for Time and Weather changes.
- New Animation Movement Clipsets, Animations.
- New Speech Option in Audio.
- Renamed and rearranged a few things.
- Hour and Minute can now be set precisely instead of advancing one or going backwards. 