We’ve seen quite a few conversions involving the Mercedes SLS AMG, and this latest one comes from Senner Tuning who say they have come up with a few ideas that brought the German Lightweight Super Sport even closer to perfection.
Their ideas translated into re-adjusting the car’s propulsion system by adding a high-performance air filter and a custom exhaust system made from stainless steel and featuring a "intelligent dynamic head control" system.
The new exhaust system alone enables 15 additional horses, while the total output from the vehicle’s 6.2-litre V8 is now 571 HP (420 kW) and 650 Nm of torque (35 HP (26 kW) and 40 Nm more than the standard version).
Senner Tuning’s treatment for the Mercedes SLS AMG also includes a set of Corniche Vegas wheels made from stainless steel and measuring 20 inches in diameter, with the appropriate high performance rubber (255/30R20 front and 285/30R20 at the rear) wrapped around them. 
A special 3 KW travel carriage with individually adjustable pressure and traction stage is also available as an option, and if you like this new package offered by Senner, then you should know it costs 19,500 Euros including tax. 

Source: Senner Tuning