Swiss tuning firm FAB Design has just pulled back the sheets on its powered-up Mercedes-Benz SLS AMG  proposal. Though the company has yet to publish all the details, we do know that 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.

FAB Design has also crafted a new body kit for Stuttgart's supercar comprising a restyled front bumper with added vents and a lip spoiler, side skirts, a race-like roof scoop, a new rear bumper that houses quad exhaust tips and a fixed rear wing. The 20-inch alloy wheels and the lowered suspension round off the changes.