[442w30]

If it's an M-code 351-4, it's rare. I have production figures at home. Off the top of my head, I think around 97 were 4-speed M-codes, and probably a couple hundred were automatics. I think 3939 in total were made starting with the 302.

Regarding the Cleveland vs. Windsor thing, I think there may be the possibility that some of the 2bbl. cars were Windsors, but all 4bbl. cars were Clevelands.