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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.

Buy a McLaren P1 GTR, Porsche 918 Spyder, and a Ferrari LaFerrari all in one place

The McLaren P1, Porsche 918 Spyder, and Ferrari LaFerrari, are arguably the three greatest hypercars yet. Of course, their extremely limited production meant that some ultra-wealthy individuals may have missed out on picking one up. In fact, to get a LaFerrari, you needed to have owned a certain number of Ferraris, and be in good graces with the company. However, if there are any super-rich car enthusiasts reading this right now, your chance to buy one or all of these three supercars is coming up next month at the RM Sotheby's Villa Erba auction in Italy. It will occur on May 27, and feature a McLaren P1 GTR, Porsche 918 Spyder Weissach, and Ferrari LaFerrari. 2016 McLaren P1 GTR McLaren fans, will RM Sotheby's won't offering just any McLaren P1, but rather the hardcore, track-prepped GTR variant. In fact, the GTR is so hardcore that it isn't legal for the street. This particular version went to specialist Lanzante to be converted for road use. Take note that it's only road legal in the UK, and it may not meet laws for other countries. However, that's still more than most GTRs can boast, and if you have the money for this, you shouldn't have any issue taking it to the UK to unleash the P1 GTR's 986 horsepower on public roads. This car could use some driving, too, as it only has about 223 miles on it, some of which included just one track event. RM Sotheby's expects this McLaren to go for between $3.4 million and $3.85 million. 2015 Porsche 918 Spyder Weissach View 31 Photos The Porsche 918 Spyder going up for auction is a special one as well. The first difference you'll notice is that it has been painted a custom color called "Arrow Blue," a hue specially mixed up as part of Porsche's custom paint service. It also features the lightweight Weissach package, which loses a few extra pounds by replacing an assortment of parts for lighter components. Among them are magnesium wheels and wheel bearings, carbon fiber roof, windshield frame, rear fenders, and rear view mirrors, and even titanium-backed brake pads. According to RM Sotheby's those pads have been replaced with fresh 918-spec pieces. The previous owner clearly enjoyed his or her 918, as it has just over 6,800 miles. In case you're interested in a well-loved 918, the auction house expects it to sell for just under $1.3 million to about $1.5 million.

Porsche planning back-to-basics 911 GT

With the latest 911 GT3 and GT3 RS track toys, Porsche clearly put the emphasis on outright performance. After all, if they were all about a puristic driving experience, they'd probably have manual transmissions instead of DCTs, right? Well that's just one point where the Porsche GT division's next project is tipped to depart. According to Autocar, Zuffenhausen's skunkworks are preparing a new addition to the 911 range that will put all the emphasis on the raw driving experience, even at the expense of lap times. The yet-to-be-named model is expected to do away with the second clutch in favor of one you can operate yourself, but that's not all. We're told to expect skinnier tires to make it easier to hold at the limits of adhesion, the narrowed track from the base Carrera, and the absence of large wings and other aerodynamic features. The inspiration apparently comes less from the GT3 than from the new Cayman GT4. Look for the new back-to-basics Elfen to arrive sometime next year, after the rest of the 911 range gets updated with turbo engines. Chances look good, though, that this particular model will stick with the atmospheric boxer six. Related Video: