yep i know your problem.....i have a 88 prelude and i got some of that stuff, it wasnt made for my car but i made it fit
what I had to do is take my bumper off, and take a drimel tool, and cut (on your car) the little red plastic strip. Then placed the mesh in the bumper. then cut it to fit. And to get it to stay in there, i took some self tapping screws and screwd the bottom part to the gravel gard on the bottom part of the bumper...(i dont know what it is really called) but yea thats what i screwd it too and it looks good i think...i know it sounds ghetto but it works! good luck man...