2007 Porsche 911 Turbo CoupeTechArt GTstreet R Conversion:1 of 3 Worldwide / Only Known U.S.This is not a standard modified 997 Turbo.This vehicle is believed to be the only GTstreet R delivered to the United States and one of just three examples worldwide built under this exact TechArt configuration/package number (097100060009).Based on information provided directly by TechArt North America, the GTstreet R conversion package alone is estimated to have cost approximately $100,000 when completed in period, on top of the original Porsche 997 Turbo donor vehicle. TechArt further confirmed the extensive package included approximately ten pages of components and specialized equipment unique to the GTstreet R program.br style=color:222;font-family:Arial,Helvetica,sans-serif;font