In 1980, I was just getting our 409 Chevy Club of America up and running, with much help from Doug Marion of Super Chevy fame, and I got a phone call from a former racer named Bill Mitchell, wanting to know about the Club. He had a 55 Chevy old drag car with a fiberglass front end, a Pontiac rear end, a 4 speed, and a 409 short block,.060"over with roller rockers, a roller cam and a pair of AFB's. We went over to Granada Hills to visit him, and in the meantime, he put the engine back together and put it in the "55. It was one loud dude. It sounded like a jack hammer doing concrete demolition. Seems that in the mid '60's, he bought a black 63 Chevy with a Pontiac rear end that had an altered wheel base, and this engine in it with a 4 speed. It originally was Mike Lenke's car. When San Fernando drag strip went away, he pulled the engine and sold the car . It disappeared after that. It used to go something like 11.50's at old SF back in the day at around 120. Several years later, he sold the top end of that engine to a guy named Mike Martin. We all had no idea what this stuff eventually would be worth, but I'm sure it's still out there. At least that might answer any questions about the black z-11 car.