Power Steering Parts for 1966 Dart 6 cyl

Greetings. Just starting the long road to restore our 66 Dart Convertible 6 cyl. I need a reservoir cap (Federal pump) and a return hose, steering gear to reservoir.

Cap not listed from usual big box parts houses….e bay shows one for $***!!! (N.O.S. USED).Trying to navigate Atlas Obsolete Parts is difficult, but assume that their p/n 812/027 is correct. Does anyone have a used one for sale here???

Return hose is another head scratcher. The current hose was a cluster of large hose, nipple, small hose. The issue here is the steering gear outlet is almost 5/8 od, and the reservoir is between 5/16 and 3/8 od. Has anyone found a solid, one piece hose with proper ends???

Any part numbers, pictures, info is helpful. Is it possible to fit a Saginaw pump to a Federal bracket??? Saginaw pumps are dime a dozen… if they fit. Many Thanks, dave