This 2008 BMW M3 convertible is powered by a 4.0-liter V8 paired with a six-speed manual transmission and is finished in Space Grey Metallic over Palladium Silver Novillo leather. Indicating 53k miles, the car is equipped with an aftermarket air intake, 19" forged Style 220 wheels, a limited-slip differential, xenon headlights, a retractable…