More details about the 918 Porsche Spyder have been leaked, starting with an actual date the Spyder will be available for viewing by the public. The public unveiling will take place at the 2013 Frankfurt Auto Show.
Speculation about the differences between the concept and the actual car begin with the V8 Engine, which was originally listed at 3.4L, but is now going to be a 4.6L.
The Spyder will now have more horsepower than originally listed.
The production version is also longer than the concept version by 5.8 inches.