Sporting an 8.0-liter V-10, the original Dodge Viper seriously outgunned the contemporary Chevrolet Corvette C4. So General Motors decided to drop a V-12 into the ‘Vette as a possible way to compete. First spotted by Road & Track, this video from YouTube channel DtRockstar1 shows the V-12 Corvette prototype—dubbed “ZR-12″—at the…