I’ve honestly never really seen the appeal in souped-up trucks. It doesn’t really matter how much power they have under the hood, the typical truck is never going to handle well enough to put much of that power to the ground. Callaway is probably better known for souping up Corvettes that it is for souping up trucks.
However, the company has announced supercharger packages for the 2014 Chevrolet Silverado and GMC Sierra 1500. Callaway says that the new engines and their direct injection system acquired a new fuel management strategy. The company is withholding power output figures at this time.
The company was targeting an output of 450 hp for the 5.3 L system and 540 hp for the 6.2 L system. The price, as you might expect, is substantial with the supercharger package costing $17,395. You could buy another truck for that amount.