G'day Ozcruiser,
If you do a power steering conversion on a HJ47 you can use the power steering pump and mount from a pre '84 HJ60. You should be able to use the same mount for the 'H' motor.
On the early HJ60's the right hand side engine mount also acts as the mount for the power steering pump. So the pump isn't mounted onto the side of the motor, it is bolted to the front of the engine mount. You should be able to pick up one relatively cheaply and the pump comes with its own tensioner, so you want the pump as well as the engine mount.
I'm unsure what side the radiator outlet and inlet are on with the H motor. However if the lower outlet is on on the right hand side you might need to make a slight modification so that it enters the radiator on about a 45 degree angle, instead of straight out, otherwise the lower radiator hose fowls the power steering belt. On the HJ47 you can still use the same lower radiator hose.
I don't know if this titbit helps or not.
Cheers,
Ben