cast iron water pumps

What application can you look up to get the three hole water pump like in the pictures.

All modern water pumps for 1957 - 1969 A and LA engines I've purchased have the three threaded bosses, left-hand inlet, short snout. The last one I purchased I think I told the parts house 1965 Fury with a 318. 1970 went to aluminum, right-hand inlet, long snout.