The homologation special still demands respect.
For the 1968 and 1969 model years, there was a push at Chevrolet to get the Corvette more involved in FIA GT events. For this purpose, a special version of the car was created, the 427-powered, 550-horsepower L88. This was a proper race car, almost completely unsuited to street use. But FIA regulations required it to be offered to the public for homologation purposes. So Chevy very quietly added it to the option list while actively discouraging sales to the public.
Just 200 of these were built, and one recently made an appearance at the Cholmondeley Pageant of Power in the UK. The car's performance figures still impress today, but what most people will probably take away from this video is just how loud the old L88 was.