The Cayman is powered by a 2.9-liter flat-six boxer engine that delivers 265 hp (an increase of 20 hp); the Cayman S gets a 3.4-liter power unit that delivers 320 hp (25 hp more). The Cayman S with PDK dual-clutch automatic and Launch Control can do 0 to 60 mph in 4.9 seconds.
Boxster gets a 2.9-liter engine that delivers 255 bhp (an increase of 10 hp). The S version gets a 3.4-liter power unit that delivers 310 hp (up 15hp). Mated to a the standard six-speed manual gearbox, the new Boxter makes the 0 to 60 mph sprint in 5.9 seconds.Porsche Cayman