Need help!!! 1965 power steering nightmare

You need hoses w/ the correct fittings, or change the valve body on the gear to match your hoses.

Not really. See post № 8 in this thread.

Re brackets, perhaps not all combinations work since the later alum water pumps are ~1" thicker.

There is no thickness difference in Slant-6 water pumps, and the OP's car has a Slant-6 engine.

The Bouchillon web site sells brackets.

Not for Slant-6 engines, they don't.

It appears the TRW pump was never used with the alum w.p., so perhaps the reverse is true for the Saginaw pump (never used w/ cast-iron w.p.?).

Also not applicable to the OP's Slant-6 car.