The Porsche 718 Cayman is the twin sister of the 718 Boxster as both use virtually all the same components. The former, of course, primarily stands out with a fixed hard top that not only changes the car’s looks and profile but also increases body rigidity. The selection of engines includes a pair of turbocharged four-cylinders and a naturally aspirated flat-six. The 718 Cayman is available in base, T, S, GTS and GT4 models.