Originally Posted by Bomber

I'm right slap bang in doing this to mine.

Bascially you need to create some sort of flow to the rad, through the rad and out of the car.

I have got Naca ducts in the rear side windows (i posted a pic in your other thread), these then feed the radiator (which is boxed in) then the air goes through the rad - and out of a vent in the floor. The trick is to create a windage tray under the car which scoops air up and flows it across the vent in the floor and 'sucks' the hot air out/pulls cold in air from the ducts creating a venturi effect.

Obviously you'll need to take the thermostat out - add an EWP and electric EWP controller, associated plumbing, a header tank in the back and a swirl pot.