Don Yenko Found a Loophole in Chevrolet’s Own Paperwork to Build a 427 Camaro GM Refused to Make — It Just Sold for $1.815 Million by Jack Harmon A 1969 Chevrolet Camaro built purely as a test mule just became the most expensive Camaro ever sold at auction. The reason it exists at all says more about a crack in Chevrolet’s own paperwork system than it does about horsepower.
