Power and blinding acceleration were the driving forces behind the development of the 1968-1969 Chevrolet Corvette 427. Only 390 1969 Corvettes were built with the famous L89 427 and while the L89 option was chosen 624 times in 1968, it is still a rare beast relative to total production. The 427 CI engine was good for 435 HP and a strong 460 lb-ft of torque making it one of the best-accelerating cars of its time. 
Chevrolet Corvette ZR-1 Spyder prototype, 1991, by ASC. An experimental styling prototype ordered by Don Runkle, Chevrolet’s chief engineer, to see how far the ZR-1 might be pushed in convertible form. The windshield was chopped in half and the seats were mounted directly to the floorpan. The black example in the National Corvette Museum was originally painted Sebring Silver with a Neutrino Yellow interior.