Did the 1979 Lil Red Express come with an air pump?

I bought an all original 79 W150 w/360 4bbl. It was a California truck and had an air pump. Single exhaust w/cat. Obviously not a LTE truck, but they were putting air pumps on some models. Long ago I had an 82 D150 w/a 318. It had the diverter valve system that Rumble mentioned.