Things You'll Need
Instructions
Ensure your game is modifiable by first installing a special software file known as a modding ability patch. Recommended patches include: "GTA 4-Launcher", "GTA IV Modding Unlocker" and "GTA IV Magic Patcher".
Decide which model of Lamborghini you wish to drive. Models available for download include the Diablo, Gallardo, Murcielago, Reventon and Spyder.
Navigate your web browser to a file-sharing site created by fans of the "GTA" series of games. Most sites provide preview pictures where you can view each Lamborghini before download.
Download and extract the mod file featuring the supercars of your dreams. Move or drag the file to your computer's GTA IV\common\data folder and replace the old file to install the mod file.
Load "GTA: SA" as normal and your new supercars will be available for selection and racing around the city's streets.