I wonder if 1969 & 1970 are the same. Setup is basically the same, but 69's still had a hi-rise intake, whereas 1970 was low rise. The difference may be the tube from the heat stove to the air cleaner housing.
I know for the big block's the housings were definately different 1969 to 1970 in various ways, including the 1969 snorkels angled pronouncably down.