With 620-horsepower on tap from the twin-tubo'd boxer engine for a 0-100km/h (62mph) sprint time of just 3.5 seconds and top speed of 330 km/h (205 mph), we'd argue Porsche's 911 GT2 RS is lighting quick. However, German tuning house Wimmer RS has a mind of its own when it comes to performance even if we're talking about a sports car that will be produced in a limited run of just 500 units. Read more »