History Buff, I have somewhere info about the guy in Scotland with the 221. I will have to dig it out. I lived there 20 years working in the North Sea
Oil and got to meet a lot of people in the UK who were AC nuts. Of course, Ken Rudd was probalby at the top of the list instead of CS. The person who owns the 221 knows the history of the motor. I believe it was fitted to the very first car that came to the US. Motor mounts fitted with the 221 and then removed to make way for the 260 that CS had in Calif. I'm almost sure this same car was airfreighted to the U.S.
Mark