Updated: Scroll down for the official 911 Turbo video from Porsche

Got a spare $150,000 sitting around doing nothing? Read on: You know that 2013 is the Porsche 911's 50th anniversary, right? Well, 2013 is also the 911 Turbo's 40th. To celebrate, Porsche is unleashing a new Turbo and Turbo S.

The Turbos are immediately recognizable as such with rear body panels stretched 1.1 inches wider than the already wide Carrera 4's and two-tone, 20-inch aluminum wheels, not to mention spoilers and scoops all over the place. The Turbo S takes it further with new LED headlights -- optional on the 911 Turbo.

The car has a new all-wheel-drive system, active rear steering, adaptive aero and a stout 520 hp from its new flat-six. The result is a sub-seven-and-a-half-minute lap on the Nürburgring North Loop. And that's on production tires.

The seven-speed PDK transmission has been revised with a stop/start feature that's activated while the car is coasting at low speed, not just when it is stopped. No manual transmission is being offered at launch.

The 520 hp (560 in the S) comes from a 3.8-liter flat-six with direct-injection. We probably don't have to tell you this but, yeah, the thing is a rocket: 60 mph arrives in 3.2 seconds with a 196-mph top speed, while the S will hit 60 in 2.9 seconds on its way to a 198-mph top speed.

The chassis is new with a 3.9-inch longer wheelbase. For the first time, the Turbo gets Porsche's Dynamic Chassis Control (PDCC) anti-roll system. It's standard on the S, optional on the non-S. The car also now has rear-wheel steering with two electro-mechanical actuators (instead of control links) on the left and right rear axles. Steering angle can be varied up to 2.8 degrees, depending on speed. Up to 31 mph, when the front wheels are turned the system steers the rear wheels in the opposite direction. Porsche says the system offers faster turn-in and better steering response. Above 31 mph, the system steers the rear wheels parallel to the fronts. The active aero has an inflatable front spoiler and a deployable rear wing with three positions.

The redesigned interior includes standard sport seats on S models. Other standard S equipment includes the Sport Chrono Package Plus with dynamic engine mounts and carbon brakes. Those are optional on the “regular” Turbo.

The cars will be at your local Porsche dealer by year's end, starting at $148,300 ($181,100 for the S), plus a $950 destination charge.

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