I don't really want to contradict particularly since it is generally not widely known. But Zora built an L88 mule in '65. For the 1966 model year there were 4 L88's built that became know as the Four Kings. The 4 cars did go out into the public realm. They all still exists and their locations are known. One has been posted in this thread. Probably more than once. It's a black and white photo of a dark colored '66 coupe with Steve McQueen getting in or out of the car. The car is actually Milano Maroon with a saddle interior. It is the only 1 of the 4 that continued with aluminum heads. The alloy heads failed on the other 3 cars during initial dyno testing. Chevy supplied the car for a Sports Illustrated article in which McQueen road tested 4 cars. The other 3 cars were more exotic like Ferrari and Porsche. McQueen was so impressed by the Corvette he said he had to have it and wanted to buy it. Zora didn't have the authority to do that so the car was leased to McQueen for a year. Then sold to him when it came off which ever fleet it was assigned to.