power steering pump for 68 slant 6 valiant

There were actually 3 p.s. pumps - TRW, Federal, and Saginaw, with mostly that chronology. The photo in post 6 looks like a Federal. The TRW pump looks very similar but has an inverted flare HP port and a larger return hose (5/8"D?). The real distinguisher is the number of bolts on the back of the reservoir (TRW has 2 in a longer slot). The mounting brackets are different for all 3, but available after-market (Bouichillon Performance is one I recall). The later Saginaw pump is supposed to be more efficient and is more available (GM cars). But, all pumps may not fit with all years and accessories.