Downloading a pre-made NFSU2 ISO from a website is , unless you own the original disc and the ISO is a backup for personal use. Legal avenues include:
The Nintendo GameCube version of Need for Speed: Underground 2 remains a unique way to experience the high-octane "tuner" culture of the early 2000s. Released in November 2004, this installment introduced an open-world environment and expanded customization that defined a generation of racing games. Technical Overview of the GameCube ISO need for speed underground 2 gamecube iso
To ensure a smooth gaming experience on Dolphin: Downloading a pre-made NFSU2 ISO from a website