When i fitted mine to my 3dr i had to remove the radiator 1st, if i had to remove & refit it again i would remove the front bumper aswell next time to make it easier. You will only be able to get it in from underneath the car, jack it up & put it on axle stands. I put mine in on my own but it helps if someone can hold the i/cooler from the top whilst your bolting it up as its quite heavy to hold with one hand from underneath whilst trying to line the holes up. Mine was a radtec one & i had to trim the brackets down on the sides of the cooler to so it would line up with the captive nuts on the car.

Goodluck

Simon.