The Mercedes-Benz CLK550 is available as a convertible and is rear-wheel drive. It is equipped with a seven-speed automatic transmission that can be shifted manually with buttons on the steering wheel. The CLK63 AMG is available only as a cabriolet. Its 6.2-iter V8 is built by a single technician at Mercedes' AMG racing subsidiary, with 475 horsepower and 465 pound-feet of torque. The CLK63 also gets sporting upgrades to its brakes and suspension, and comes with a longer list of ultra-luxury features. Standard features include leather upholstery, dual-zone climate control, and rain-sensing windshield wipers. Black-stained ash wood trim is standard, and more traditional burl walnut is available as a no-charge option.For 2007, the Mercedes-Benz CLK-Class receives slight power increases.