The Golden Train Heist features a new heist in which you ambush a merry weather train and loot it of its gold and then make your grand escape.
Open the zip file.
Drag and drop the contents into your scripts folder.
Installation instructions are also inside the download.
How to use the mod: Head over to The Golden Train Security area near San Chiankski Mountain Range and enter to start the heist.
Better to have legitimate copy of the game
(I don’t know if it would work on a cracked version)