The Official 964 Picture Thread!
#462
The G series was 1974, from 1963-1989 there were letters like O, A, B, C, D, etc. Nearly every letter of the alphabet. I think it's easier to think of it as 1963-1969 as the 2.0, 1969-1971 as the 2.2, 1971-1973 as the 2.4, 1974-1977 as the 2.7, then you have the SC, then the 3.2.