I stumbled across an interesting article from Muscle Car Blog News:

Owners of the new Ford GT500 are a proud group - proud of the car and proud of the 500 horsepower that comes with the stock engine' But the engineers at ROUSH Performance, the leader in Ford powertrain development and all things high-performance, are ready to unveil a new ROUSHcharger that can boost the performance over the edge with up to 700 horsepower'

Found at: Muscle Car Blog News