D1 Garage in Adelaide were selling JZA70 ones for $150 ea a couple on months ago.
Also, the core and top tanks are very similar to a Cressida - only the shroud mounting points are different depending on what flavour (either JZA70 with hydraulic fan, MA70 N/A with air-con condensor fan etc, MA71 without condensor fan etc). JZA70 also have a temp probe in the bottom of the radiator for the fan control.