With the release of Forza 4, many fans were disappointed to discover that, due to licensing difficulties, Turn 10 Studios were not able to include a single Porsche vehicle for its racing car lineup. However as of yesterday, 30 cars from the iconic European brand were made available for download in the released Porsche expansion pack. Among those vehicles is the Porsche 911 Turbo 3.3, Porsche 911 GT2 RS and Porsche 962. In addition to the download, players are also able to race in 20 new events, unlock 10 more achievements and race head-to-head in a rival mode set only for Porsche vehicles. The Forza Motorsport 4 Porsche Expansion Pack is available now on the Xbox Live Marketplace for 1600 Microsoft Points (approximately $20 USD) and will take up around 329 MB of space.