You will need a 14mm Otter switch, to drill 2 new holes for the studs to locate in the rectangular hole, and foam to seal the gap around the rad so all the air goes through the rad and not through the gap around the rad.
I have not yet worked out the best mesh to act as a stone screen, but it would be much easier to screw it to the fibreglass from the front wheel well, as it is supposed to stop stones from that tyre punching a hole in the rad.