Downloading a film through legitimate channels ensures that the actors, directors, and crew are compensated for their work. This financial support is what allows studios to produce sequels and new content.
When searching for many users accidentally stumble upon the sequel. Ensure you are looking for the 2004 original (with Riccardo Scamarcio) rather than the 2010 Spanish version or the 2012 Italian sequel.
While suing an individual downloader is rare, it does happen. In Germany, France, and the United States, copyright trolls monitor torrent swarms for popular Italian films. If you download the file via BitTorrent without a VPN, your IP address is visible to everyone, including lawyers.