If for some very strange reason you find that the Mercedes-Benz CLS 63 AMG lacks some serious punch under its hood, Germany's Vath has developed a new performance package for Stuttgart's sports saloon.

The tuner breaths more fire into the CLS 63 AMG through the use of its V63RS engine kit that bumps the 5.5-liter bi-turbocharged V8's output from 525-hp and 700-Nm to 660-horses and a whopping 990Nm or 730 lb-ft of peak torque.[...]

Source: Carscoop