Autos.Yahoo, John Hennessey's tuning shop in Texas operates on a simple principle that denies the existence of "too much horsepower." Here's his latest offering to the angry gods of speed -- a dozen Hennessey V1200 Cadillac CTS-V coupes, all of which offer more than double the power of their everyday lookalikes with a Bugatti-challenging 1,226 hp and a top speed of 242 mph. While the already sinister CTS-V makes due with 551 hp, Hennessey's transformation begins by swapping the engine with his tuned version of the 7-liter LS7 V-8, paired with twin turbos and bolstering of its internal parts. The system can be turned down to just 800 hp for those owners worried about how much trouble they could cause in a car capable of hitting 60 mph in under 3 seconds (Industry, Video)