Henessey Performance Engineering, a tuning company 
headquartered in Texas, is planning to release upgraded CTS-V sedans from Cadillac in the latter part of 2009. The line of cars will be called the V-series and is expected to have an engine output ranging from 610 hp to 800 hp.
Upon the released of the modified Cadillacs, they will join the ranks of super power cars like the Nissan GT-R Godzilla 700 and the Dodge Venom Vipers.
The cars will be boosted by putting under its hood a supercharged V8 LSA 6.2L engine which is the new baby of General Motors. The output of the untweaked engine is 556 hp but the rev can be up by adding a supercharger kit, sports filter from K&N, and a modified ECU.
The new engine can bring the Cadillac CTS-V from 0 to 60 in just a blink of 3.7 seconds. A quarter mile can be covered in 11.8 seconds with top speed reaching around 195 mph.