I have a slight obsession with early Holden Power Steering systems 😊
EJ, EH, HD/HR (2 sets), HK/T/G Chev engine, HK/T/G Holden engine.
My HR X2 Premier Wagon has a factory type unit fitted to it, although it's a unit that I fitted so not "technically" factory fitted.
X2 w/Powersteer had afew differences, although the pump was still mounted on the passengers side.
*The pump housing had a different angle for the return line, due to clearance issues with the Inlet manifold.
*The subframe mounted "ram support bracket" was different for X2, due to the dual front exhaust pipe.
I've just taken some pictures of my HR Premier setup, which will hopefully do the trick.
As a side note, due to a 179 head having been fitted to my HR, it retains a standard top thermostat housing & hose (like an HD) instead of the EH style thermostat housing and special top hose usually found on an HR w/Powersteer.
Those photos should be in order, from the pump all the way down to the valve.
Happy to answer any questions 🤟