Has anyone actually ordered the said part from Nissan for their RHD car? If so what part number did you use? I have ordered a Power Steering Hose Assembly from US but was told by my mechanic that it does not fit (probably due to LHD vs RHD differences in the cars) and so I had to return it.
Why don't you just call up Nissan and describe what you want. Tell them you have a 1990 NA Auto (Aus delivered) and tell them you want that hose. They will give you a part number and a quote and a delivery time.
Tell the machanic to take your old hose to a hydraulics shop like Pirtek or Enzed, they will make up a new hose for under $100. Alot cheaper than Nissan Australia.