Kim,
Forgot one question. '61 409s were 142 in production cars. Tonawanda made over 300 motors though. The earliest ones were cast in Nov. '60 but production was ceased in July '61. There were many casting problems with them, and before July, the 068 ('62 blocks) were already nearing production so they threw in the towel on those '61 623 castings.
Verne
