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The 2017 Porsche 911 RSR goes mid-engine, purists be damned

Porsche unveiled its World Endurance Championship and IMSA WeatherTech Championship competitor with the 2017 911 RSR. And this 911 is different from the rest, as the 4.0-liter flat-six engine powering this beast is in front of the rear axle, not behind it. That's right, this 24 Hours of Le Mans competitor ditches the iconic rear-engine layout. Porsche isn't talking specifics on how exactly things are arranged back there. The engine is new, now based on the 991 911's block instead of the previous Mezger motor that's been used for years. The transmission design is new as well – it would have to be to accommodate the new location relative to the engine. The racecar has been engineered to meet the LM-GTE class, where it will go up against other mid-engine cars like the Ford GT and Ferrari 488 GTE. Moving the engine to the middle has given Porsche the ability to fit the 911 RSR with massive bits of aero, like the humongous rear diffuser that looks like it would be more at home on a machine of war. The only thing that can compete with the diffuser for size is the top-mounted rear wing, which shares a similar design to the one found on the 919 Hybrid. Going back to the engine, the direct-injected boxer motor, depending on the size of the restrictor, generates as much as 510 horsepower and sends all of its fury to the rear wheels. The engine is paired to a six-speed sequential gearbox, which drivers can employ through paddles on the steering wheel. The new engine doesn't have a lot of weight to push around as the 911 RSR, as required by regulations, weighs 2,740 pounds. Speaking of weight, the engine layout isn't the only change for the 911 RSR. For 2017, the car ditches its steel body for one that's made out of carbon fiber. The body attaches to the chassis via quick-release fasteners, making the vehicle easier to service as exterior elements can be removed with minimal effort. The racecar also gets a radar-based collision system – aptly named the "Collision Avoid System" – which is meant to limit the 911 RSR's encounters with faster LMP prototypes. Only time will tell if the new layout and aerodynamic components help the 911 RSR beat its competition. But there will be plenty of opportunities to see the racecar in action as Porsche plans to run the 911 RSR in 19 races during the 2017 season, the first of which will take place at the IMSA opener on January 28th at Daytona, where the racecar will make its track day debut.

McLaren boss' exclusive Porsche 935 Street is worth three 911 Turbos

McLarens may be exclusive, but there are still hundreds - if not thousands - of people out there who can say they own one. Mansour Ojjeh is one of them, but he doesn't just own a McLaren - he owns McLaren. As in, the company that makes the racing and exotic supercars. Or 25 percent of it, anyway. As the head of Techniques d'Avant Garde, Ojjeh is one of the British outfit's largest shareholders, previously having owned Heuer watches (before selling it to luxury giant LVMH) and engineered Porsche's most successful foray into Formula One - winning the world drivers' championship three times in a row and the constructors' title twice with Alain Prost and Niki Lauda behind the wheel of McLarens with Porsche engines developed and branded by TAG.
In short, he probably could get any McLaren he wanted at the drop of a hat, but also had strong ties to Porsche in the 80s, and this is the car he wanted. It's called the Porsche 935 Street, and it's the only one ever made. Inspired by the 935 racer that won Le Mans and over 120 other races, Ojjeh contracted Porsche Exclusive when it was still in its infancy to make him one for the road. So they took a 930 bodyshell, slotted in the 3.3-liter turbo flat-six from the 934 but cranked output up to 375 horsepower, and gave it the brakes, suspension, BBS wheels and wide-body aero from the 935 racer. They painted it a deep metallic red and trimmed the interior with cream leather and wood veneer.
When all was said and done, a total of 550 modifications were performed, detailed on a seventeen-page invoice and costing as much as three new 911 Turbos at the time. Ojjeh only put 12,000 miles on the odometer, running up and down the French Riviera, and has now put it up for sale at the upcoming Bonhams auction at Spa where it's tipped to fetch upwards of 300,000 euros - equivalent to $410k at today's rates, or, once again, the price of about three new 911 Turbos.

Porsche 911 GT3 RS revealed in patent photos

Porsche has been taking its time developing the most hardcore 911 models for the latest 991 chassis. While the GT3 has been on the market for a little while, it suffered from some teething issues. The 911 GT3 RS is certainly on the radar since being spotted testing, but it's always better to get a look at a new car without all of the camo to hide the coolest parts. Thankfully, Car in the UK has some patent photos of the RS ahead of its debut, and they show off one mean-looking 911.
The first thing that you notice about the RS is that Porsche clearly isn't afraid to rework the latest 911's shape for its track-focused version. Each piece is slightly resculpted to squeeze the most out of it. Up front, the air dam has the same shape to the earlier photos. They also both highlight the upcoming model's tiny air inlet at the tip of the hood, the massive intakes in the rear fenders and general design of the rear wing with a ducktail underneath. The bubbled roof is much clearer here, where it was disguised in spy shots. You can also spot the slashing fender gills behind the front wheels that are a completely new feature.
The GT3 RS is the ultimate naturally aspirated 911 for the street, but according to Car, Porsche aims to take that even farther with the latest model. If these are the looks, then it's working. Unfortunately, the new version's powerplant remains a mystery. Though, given all the changes to the bodywork, the engine is almost surely getting tweaked over the 475-horsepower GT3. The RS is rumored to hit the road and be screaming down the track in 2015.