The XP-819 Corvette prototype was introduced in 1964 by Frank WInchell and Larry Shinoda as the first, experimental, rear-engine Corvette coupe. The XP-819 was developed in the mid-1960's as an engineering exercise to determine if a rear-engine platform was right for the Corvette program. During that time, Chevrolet was still under a racing ban.
The Chevrolet Aerovette (originally designated Experimental Project XP-882) was developed in the late 1960's under the watchful eyes and mind of Zora Arkus-Duntov. Unlike the XP-819, which ultimately proved to have too much rear weight bias, Duntov focused on developing the Aerovette as a mid-engine platform.
The CERV II was entirely Zora’s car. The CERV II was conceived early in 1962 and developed over the next year, after the GS program was squashed. The car was built under Zora's direction between 1963-'64. Zora had it in mind to develop a separate line of racing Corvettes but the idea got terminated by management.