Hi Robert, According to Galen Govier's little booklet, > 2206324 - 1962 with 361, 383, 413 ; closed chamber with 2:08 Intake and 1:74 Exhaust > 2406516- 1964-65 361, 383, 413; 1964-66 426; 1965 300L; 66-67 383; closed chamber with 2:08 Intake and 1:60 exhaust. > 2463200- 1963 361,383, 413 with closed chamber with 2:08 Intake and 1:60 exhaust. Hope this helps. I make no claims as to the accuracy of the above, just copying from Galen's booklet. John