You might try finding a ford explorer radiator. Some of them automatics with A/C and a 4.0 motor have a 3 core radiator. I know its a direct swap to put one into a little bronco II, so I would think it would fit in a toyota. I want to say the inlet and outlets are on the correct sides for a ford waterpump also.
Then, some of the thunderbirds and taurus cars have a wicked 2 speed electric fan that is pretty low profile, and moves some SERIOUS air. You have to run those big maxi-fuses as it can draw upwards of 50 amps I believe. The bronco II guys run low speed always, and put the high speed on a switch and just watch the temp gauge.