A variety of technologies and improvements made the 2010 GTS a welcome addition to the 997/2 lineup. The 1.7-inch-wider rear track on 19-inch center-lock RS Spyder wheels made good use of the 408 horsepower available. Porsche Archiv

The new PDK transmission offered drivers a sevenspeed near-instant shifting gearbox that was a perfect mate to draw the best performance or the best fuel economy out of the new 2009 DFI flat-six engines. Fingertip levers on the steering wheel or the gearshift lever were available for those wishing to change gears themselves. Porsche Archiv

A new roofline adhered more closely to the 911 body shape as Michael Mauer’s exterior stylists worked to reduce the difference in appearance between closed and open cars. Convertible top engineers inserted a slim composite panel between cloth layers above the seats to better hold the roofline shape. Porsche Presse

The Carrera S delivered 400 horsepower from its 3.8-liter engine while the base Carrera developed 350 from 3.4 liters. The Cabriolets began to reach customers in early 2013. Porsche Presse

At Österreichring on June 27, 1976, Dieter Schmidt and Karl Oppitzhauser shared driving duties in Egon Evertz’s Jagermeister 934. Fellow driver Edgar Dören warned them the 934 behaved “like a wild animal.” Porsche Archiv

Ernst Fuhrmann conceived the 1977 Typ 935 “Baby” to gather publicity in a televised under 2.0-liter GT racing series. The car weighed just 1,650 pounds and its 1.4-liter turbocharged flat six developed 370 horsepower. Porsche Archiv

Metge and LeMoine and other Porsche team members carried as much as 100 gallons of fuel in these 953s. Some of the rally desert sections ran as long as 500 miles. Porsche Archiv

Into the pits on Saturday evening before the long Le Mans night, GT1 Race number 26 had begun to collect dirt along with miles. The next afternoon, co-drivers Allan McNish, Stephane Ortelli, and Laurent Aiello won the race, completing 352 laps and covering 2,975.8 miles. Porsche Archiv

The Neuester Sportwagen Typ 550 Spyder was one of Erwin Komenda’s finest collaborations with modeler Heinrich Klie. This early model was photographed outside Wendler Karosserie, Reutlingen, before its first speed test. Porsche Archiv