Can I fit power steering to my 1961 Plymouth Valiant?

From what I understand, the answer is yes.
They made a high mount drivers side alternator mount from the t-stat housing.
The pump mounted below.
Shimos has installed it on his Valiant Wagon.

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Hyper_pak

High-mount alternator etc is '60-only, when the alternator was on the manifold side. For '61, it was moved to the distributor side. P/S pump bracketry is '60-'66; get the brackets to go with the kind of pump you're using; OE was Thompson (--> TRW, later Federal pumps also fit these brackets), with Saginaw pumps (different bracketry) being added in parallel starting in '65. Later brackets put the P/S pump too far out from the engine for sure compatibility with narrow early engine bay, though that problem is more likely with A/C. Make sure to get brackets and a pump (or at least a pump pulley) from a car without factory A/C.

The power steering gearbox is '60-'61 Valiant-Lancer only; no other years or models. That'll be difficult to find, and you'll almost certainly have to send it to Red Head or Steer & Gear or Firm Feel for rebuild (and upgrade, if you're wise). High-pressure hose (from pump to box) is still available, last I checked.

Steering shaft is shorter with P/S, and it's another '60-'61-only piece; you may wind up having to get your existing shaft shortened.

P/S pump drive sheave bolts onto the front of the vibration damper. Same all years, right from '60 to '87.

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