The C6.R is based on the ZR1, but comes in with about 500 horsepower to push its 2,745-pound weight and uses a sequential transmission and slicks. The ZR1 works with 638 horses but has 3,345 ...

With regular service records, a clean CarFax, and $10,000 worth of upgrades, it's a tempting example to say the least.

The C6 ZR1's flourishes, such as the polycarbonate window on the hood, twin gills on the front fenders, carbon brakes, and CF roof, make it unmistakable. The C7 ZR1 can only be confused with the ...

The ZR1 skipped the C5 but showed up again, sans hyphen, in the 2009 C6 Corvette. Now fielding a supercharged 638-hp LS9 (604 lb-ft of torque) engine, it was the first factory Corvette to top 200 mph!