speedART Refines the Porsche 911 Turbo
17 Dec 2009, 12:48 UTC · By: Alina Dumitrache / The tuners at speedART have just launched the BTR II 580, which is based on the Porsche 911 Turbo (997) 3.8-liter with PDK gearbox. As expected, the car underwent serious upgrades both in styling an...