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The Zagato company took a C7 Corvette Z06 and transformed it into the IsoRivolta GTZ, a "spiritual descendant" of the Iso Grifo A3/C (Corsa).  The original A3/C race car was developed by Giotto Bizzarrini not long after he left Ferrari, where he had served as cheif engineer behind the 250 GTO, which is revered as the world's most expensive car.  Bizzarrini purportedly fancied the A3/C as his "own personal evolution of (and improvement upon) the GTO design."
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.
In June 2021, General Motors introduced the 2022 Corvette Stingray IMSA GTLM Championship Edition, a special edition Corvette which commemorates the Corvette C8.R and its 2020 IMSA WeatherTech racing series championship. The car made its public debut at Belle Isle in Detroit. These special edition Corvettes were developed using styling cues from the Corvette C8.R race cars.