Many automotive enthusiasts feel sports cars simply must have a manual transmission and the Porsche 718 GT4 comes standard with a very good six-speed. But the quickest way around a track is with the 7-speed dual-clutch Doppelkupplung gearbox. You may know it as the legendary PDK with eye-blink gear swaps. At least there’s no argument that the naturally aspirated 4-liter flat-6 Boxer engine making 414 horsepower sounds like a symphony.