Check out these great 1963 Corvette images. You can just tell from looking at pictures of the 1963 Corvette that it had more horsepower, was better handling, and was physically more appealing than any of its predecessors.
The 1964 Corvette continued to build upon the improvements of the 1963 model year, with a choice of four different engine outputs, three manual transmissions (and one automatic), as well as more technology and creature comforts.
The first Z06 was actually an option package first offered with the 1963 Corvette. The Z06 option was designed to allow consumers to bolster the 1963 "Split-Window" Corvettes performance and handling capabilities for use on the race track.
The chassis featured an independent rear suspension with a single transverse leaf spring. 1963 was a big production year with the first year of the C2 Corvette seeing production of 21,513 units (and still demand exceeded supply).