I also think that this grill sticks out too far at the front. It really does need to be recessed which is why I made my own. I got all the bits I needed from B&Q coming to a heady £35 ish to include a sheet of grill material some high strength araldite and a 90 degree section of ally and a thin strip of ally. I took the bumper off as it was freezing outside not a technically demanding job at all, and fitted the grill in a fashion that I could still unscrew it when the bumper is back in place. You could do it so that the ally 90 section isnt required but post fit removal would require removal of the bumper. I haven't sprayed the ally 90 section yet as time ran out on me and I needed the car back together. I chose the gold grilling as all my badges are gold so i thought zinc wouldn't look right. The whole job really wasn't all that technically demanding and I had enough stuff to do the small holes in the bumper as well as the two brake cooler holes down the side of the car. The finished article is below.
http://www.showoffyourcar.com/cars/2279.jpg