Now the job (only with the 3RZ swap) runs into a couple problems..
I know its hard to see from the above pic, but there seems to be ample space for the fan.. However the stock 3RZ fan does NOT fit. It could fit, but you would have to install the fan first, and then put the radiator in. And then even still it would be pretty darn close to the fins of the radiator.
You can see from the following pictures just how massive the 3RZ fan is compared to the 22R fan:
