Installation:
To install, use IMGTool. Open it gta3.img (located in the ‘models’ folder in the directory with the game), use the FIND command to find and delete the streak.dff and streak.txd files and insert the ADD files from this archive.
You can also add it to the game as a new locomotive. On our site gtaisnide.com in the section GTA: San Andreas> Articles posted a detailed guide to adding new locomotives and wagons to the game.
Credits:
Dovetail Games, Driver, Fernando33