Try D1 Garage in Adelaide if you get desperate. Last time I heard they were selling jza70 radiators with hydraulic fan for $150. http://www.d1garage.com
Or you can use a Cressida radiator but have to make some mounts for the fan from angle iron (only bottom mounts needed as bolts on to the top) I did this for my car, but then you also need to plumb the coolant temp sensor in the bottom radiator pipe to run the fan controller.