German tuning powerhouse Vath Automobiltechnik decided to give the Mercedes ML 63 AMG further technical improvements. 
For 19,635 Euros that includes the 1,785 Euro installation tax, the 6.3-litre powering the Vath Mercedes ML 63 AMG can receive the following enhancements : enlarged countersunk channels leading to the cylinder head, biger intake and exhaust valves, a sports camshaft, reprogrammed engine electronics, an exhaust manifold, two high-grade steel catalyst converters, a sport air filter, plus special forged pistons that guarantee stability at high engine rpm.
This extensive list of engine improvements means the Vath Mercedes ML 63 AMG has 585 HP and 690 Nm of torque at its disposal, figures that translate into a 4.5 seconds acceleration time from 0 to 100 Km/h and a top speed of 300 Km/h.
At the exterior the Vath Mercedes ML 63 AMG features modifications that are also aimed towards performance rather than looks, like the 405 Euro rear spoiler that reduces uplift on the rear axle or the 8,568 Euros wheel set with 3-spoke 22-inch light alloys wrapped in high performance Dunlop tyres that offers enough space for the VATH high performance breaking system. This new braking system has a 4,641 Euro price tag and comes with 8-piston fix calipers, 15 inch break discs and flexible steel tubes and racing break fluids.  
Other upgrades available for the Vath Mercedes ML 63 AMG include an adjustable sport suspension for 1,952 Euro and fog lights behind the front bumper grill for 583 Euros.

Source: Vath Automobiltechnik