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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.

Lamborghini Miura, Porsche 911 highlight Techno Classica

Visitors to the Techno Classica show in Germany this weekend were treated to the spectacle of all manner of classic cars under the roof of the Messe Essen. Not surprisingly, the Volkswagen Group was well represented, with the historical departments of two of its flagship marques showcasing their in-house restoration projects – albeit in radically different states of repair. While Porsche brought a completely restored example of a particularly storied 911, Lamborghini went the opposite route by displaying the bare body-in-white for a Miura. With the Miura now celebrating its 50th anniversary, Lamborghini's recently launched PoloStorico division is in the process of restoring several examples. Chassis #5030 is a Miura SV that, as you can see, is still in the middle of its refurbishment, its frame corrected but still unfinished – but that didn't stop the Raging Bull marque from putting it on display. It was joined by the freshly completed green example (chassis #4846) that was the department's first project, as well as the engine from a Miura P400S. Meanwhile, Porsche Classic arrived with a lovely 911 2.5 S/T, the precursor of the 911 RSR. One of only 24 examples made, this particular vehicle won its class at Le Mans in 1972 at the hands of works driver Jurgen Barth (who would alter claim victory overall in '77). It was rediscovered in poor health decades later by a collector, who commissioned Porsche Classic to bring it back to life. The task proved monumental, the vehicle having been modified, crashed, rusted, and used as a playground for children. Both vehicles aptly demonstrate the kind of care that these manufacturers' own restoration departments put into preserving their company's legacy. If you weren't in Essen this weekend to see them first-hand, you can check them both out in the pair of image galleries. Related Video: LAMBORGHINI POLOSTORICO AT TECHNO CLASSICA 2016: RESTORATIONS CELEBRATE MIURA 50TH ANNIVERSARY Lamborghini PoloStorico is at Techno Classica in Essen, 6-10 April 2016, celebrating the Miura's 50th anniversary and illustrating its scope of expertise in restoring classic Lamborghini models. Showing the original Miura SV first unveiled at the 1971 Geneva Motor Show and the subject of a full restoration by Lamborghini PoloStorico, the stand also displays a Miura chassis demonstrating work in progress and a fully overhauled Miura engine.

Vintage-ish Porsche 911 buying guide

Harry Metcalfe is always great at showing viewers the intricate details of the vehicles in his collection as part of the Harry's Garage series. This time he's helping out future buyers by explaining what to look for when purchasing a classic and slightly more modern Porsche 911. His examples for this lesson are two absolute beauties that are about to cross the block from Silverstone Auctions in the UK: a 1972 2.4 S and a 1991 964-chassis RS Clubsport. The '72 in creamy white here epitomizes the look of early 911s. The coupe is handsome, purposeful, and fairly compact by modern standards. According to Metcalfe, when looking at one, don't worry about a wobbly gearshift. Apparently, they're all like that, even ones as well cared for as this example. As with any used car purchase, he recommends trying to get as many service records as you can. It's just good to know as much about the vehicle's life as possible before throwing down any cash. Where the '72 911 shows the more gentlemanly side of the brand, the '91 RS Clubsport is Porsche proving the company's performance credentials. Metcalfe slightly dings the switch to an aftermarket air filter here, but overall it's hard to find a major fault. These cars were essentially road-going racers in this trim. The engineers in Zuffenhausen chopped out as much weight as possible and then fitted Recaro racing buckets and a roll cage. This thing was meant clock as many laps around the 'Ring as the driver could stand.