This 2002 BMW M3 convertible has 23k miles and is finished in Steel Grey Metallic over black Nappa leather upholstery. Power is provided by a 3.2-liter S54 inline-six mated to a six-speed manual transmission and a limited-slip differential, and the car is equipped with a power-retractable black soft top, xenon headlights, fog lights, and 18" Style…