Your best bet is Australia. HJ47's never came with power steering, but FJ45's did as an (uncommon) option. You will need the p/s gearbox from an FJ45. The steering shaft will need shortening. As for the vane pump, there is a factory pump for the 2H. The pump for your application needs to come off an early HJ60, as they shared the same engine mount. You will need the correct right side engine mount, as is is intrinsic to the pump attachment to the engine.
Then you will need to locate a reservoir, which are abundant in wrecking yards, and probably need to fab a custom bracket to mount it somewhere in your engine bay. I put mine on the left front side, as that was the only spot with decent room.
There are also some non-Toyota options to consider, as well as Toyota options from light duty pick-ups. The key part though is the gearbox. If you take a look at my build thread (see link in my sig. line), you can see what I came up with.
My rig came from Australia with a power steering gearbox on it, but when I decided to convert to LHD, I sold it (for ridiculously cheap, in hindsight)