Uhhh...ok.
The Corvette variant, now officially known as the ZR1. The car has been confirmed to feature a supercharged "LS9" 6.2-liter engine producing more than 650 hp. Spy photos from recent hot laps at Mazda Raceway Laguna Seca, following the 2007 American Le Mans Series final race, show the ZR1 to have carbon-ceramic brakes, extensive carbon fiber (front quarterpanels, A- and B- pillars, as well as the roof and possibly other body panels), and a full-width rear lip spoiler.
The ZR1 was unveiled in a recent press statement by General Motors. Revealed was an LS9 with 620 horsepower and 595 pound-feet of torque. Top speed is suspected to exceed 200mph.