Tim,
Here are pics of the setup that Brian Magee did for me when I replaced my GTD radiator with a Docking and moved the condenser in front of it.
In addition to the grille, which was a very simple affair, held on by 4 screws and nuts, Brian also fabricated baffles below and to either side of the radiator opening, which ducts air through the radiator and and not round the sides or below. It was to these that Brian attached the grille. The whole thing is invisible form the front when the clip is closed.
Tony