What radiator could I use thats small enough to fit underneath the upper rad support and above the lower rad support instead of behind it and in front on the engine. (in other words move it towards the front of the car, inside the bumper) I need to make room for my diy setup.

 

A civic rad will do with something like a FAL fan.... but that doesn't seem to be what you need

 

forget it, I now have the room I need, i've got to go externaly wastgated and build a custom dp, so time to spend some more $$$$$$

 

scirocco style also fits....its a universal sizing radiator.