The Texas Tuner is at it again. This time he's not prepping a new Camaro or Corvette for high-speed, high-horsepower duty. Instead, he's turned his attentions to the Cadillac Escalade. Yes, the large luxury SUV from the GM stable just got a massive dose of power, and you can put one in your garage.

In it's stock guise, the Escalade is actually surprisingly quick. It has a 420-horsepower V-8 engine and it will make the blast from 0-60 mph in just over five seconds. It's more nimble on its feet than you might guess. Still, that's not enough for John Hennessey and his crew at Hennessey Performance Engineering.

The company's HPE800 Escalade adds a supercharger to the GM 6.2-liter V-8, raising the output to 842 horsepower and 855 pound-feet of torque. Apparently, that's enough to get this small condo on wheels moving rather briskly. The 0-60 mph blast takes is over in just 3.9 seconds, and it will dispatch a quarter mile in 12.3 seconds.

It's not going to be cheap, mind you. According to Road & Track, the HPE800 package starts at $55,000. If you want to upgrade your wheels, tires, and brakes, you'll need to add $25,000 more. If you opt for the engine upgrade, we recommend spending the extra $25K so you can turn and stop. Those prices, by the way, are obviously before you factor in the cost of the actual Escalade.

More power doesn't come inexpensively. But that's the price you pay for an Escalade that accelerates like a supercar.