The Chevrolet Corvette C7 Z06 was a beast from the moment it drove through the factory gate. But someone thought it wasn't enough. So, a few mods later, the sports car comes with 900 horsepower.

Tuning an already powerful machine isn’t as hard as some people might think. Bolt a supercharger or strap a thumping great turbocharger and you’re almost there. Then again, increasing the output ...