The numbers, however, tell a different story. The normally aspirated 5.7-liter V10 in the mid-engined Carrera GT churns out 612HP (620PS) for a 0-100 km/h (0-62 mph) acceleration time of 3.9 seconds and a top speed of 330 km/h (205 mph). The twin-turbocharged 3.6-liter that’s hung out behind the rear axle of the 997 GT2 RS has an identical power output and top speed but is faster by 0.4 seconds in the customary 0-100 km/h sprint.