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Unlike its predecessors, the new Z06-the factory-tuned Corvette-isn't just an upgrade of the base model. It's a completely new car. Nearly everything steel on the conventional 'Vette becomes aluminum or magnesium on the Z06, including the frame, cab structure and suspension. Superlight carbon fiber replaces fiberglass front fenders. The monstrous 7.0-liter smallblock pulls all the way to 7,000 rpm, the highest redline ever in a Chevy V8. Lightweight parts (like titanium connecting rods) and precision manufacturing allow the engine to spin faster. What it all means for the lucky driver is 505 hp, 0-60 in 3.7 seconds and a top speed of 198 mph. $65,800