The XP-819, developed in the mid-1960s, was an engineering exercise to test a rear engine concept for the Corvette. The body was designed by Larry Shinoda. You can see styling cues in XP-819 that later appeared in Shinoda's famed "Sting Ray" design. A GM marine engine powers the car so the two-speed transaxle would operate properly. The entire chassis, suspension, and steering are custom made components unique to this car.
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 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.