Now turn powered-up Mercedes-Benz SLS AMG proposal by Swiss tuning firm FAB Design. The tuner found a way to extract 40 more ponies from ‘Gullwing’ door supercar’s V8 engine pushing total output to 611-horsepower. The extra oomph allows the SLS AMG to do the 0-to-100km/h (62mph) sprint in 3.7 seconds instead of the stock model’s time of 3.8 seconds
