The Z06 Corvette shook the foundations of the sports car world upon its 2001 debut, as the Corvette for the extreme performance enthusiast. Just a year later, horsepower moved from 385 to an awe-inspiring 405. All 2004 Z06 Corvettes benefited from the continual pursuit of performance enhancements that have characterized the C5 era. The enhancements for 2004 were subtle in terms of physical parts, but significant in terms of the car’s performance and feel.