Much easier, and a permanent fix. Go to a hardware store and buy a small roll of fiberglass window screening. Remove what you can to expose as much of the front part of the radiator as you can get to--cut screening about 4" wider than the width of the radiator and about 6" longer than the height. I double about 3" of screening at the top to make it stronger and then make two holes at each top corner of the screen about 2" from each edge, and put in a grommet at each corner (HF has grommet kits for about $2). Then attach through the gromment to some reachable place near the top sides of the radiator with a zip lock tie. The fiberglass screening will last for many years, and the bugs will never get through to the radiator. When the bugs dry out, they will fall off, be blown away, or washed off and away in the rain. I've done this to every vehicle I've owned for more than 30 years. It works and is a permanent fix for bug problems. And no, it will not restrict air flow to or through the radiator.