To pull it off, the Brabus crew stuck with its tried and true formula of shoving entirely too much engine into a small package. Underneath the vented hood lies a Mercedes-sourced V12 that’s been stroked from 5.5- to 6.3-liters. From there, the Bottrop boys fit a duo of turbos, two intercoolers, a couple high-flow cats and a stainless steel exhaust. The effect is typical Brabus: A staggering 740 horsepower and 995 pound-feet of torque, which is actually limited to 811 lb-ft (at 2,100 rpm) to avoid the gearbox, diff and rear tires from vaporizing in an oily, metallic haze. And naturally, the absurdity doesn’t stop with the engine.

Twelve-piston front calipers clamp onto 15-inch discs, with six-piston calipers and 14.2-inch rotors in the rear, while a height adjustable coilover suspension with ten settings for bound and rebound join 22-inch wheels wrapped in a choice of Pirelli or Yokohama rubber. The exterior and interior have been restyled to match, and while Merc’s diminutive ‘ute isn’t exactly a beauty queen to begin with, Brabus’ blocky aftermarket brutalization lends itself well to the GLK’s squat proportions.

But aesthetics aside, there’s a bigger problem. Actually, there are 397,000 of ‘em. That’s how many euros you’ll need for the GLK V12. For that kind of scratch ($580,000 using a straight conversion), there’s a host of high-power exotica available.

And when you consider the GLK’s sprinting stats — 0-60 in 4.2 seconds and 124 mph in 12.8 ticks — the far less expensive BMW X5 M is easily on par and was actually designed from the onset to be an offensively quick grocery-getter. Then again, the M can’t break the double-century mark at Nardo… something to consider during your trip to Costco. Press release below the fold.

Brabus is also offering other modifications for the E63 AMG as well, including a carbon fiber aero kit, wheels in 18 to 20-inch sizes, and various interior trim pieces like stainless-steel scuff plates, a new 225 mph speedometer, and wood or carbon fiber inlays. For the most part ,we’d skip the visual bits and stick with the engine upgrades. Hit the jump for full details in press release, or check out the high-res gallery below courtesy of Brabus.