Need urgent help on my Slant Six (throttle cable setup)

On my '73 the rod is flat and not round. It measured 6 1/2" with a 2" slot in one end. (1 barrel

My '72 with a 2 barrel measure 7 1/4" with a curved 2" slot in one end.

The rest of the brackets look the same as the diagram except my rod is a flat bar.

I see in your diagram there are two rods labeled 14-11-9....I measured the upper ones...near the carb. The shorter one.