just finished this project. Bought some aluminum gutter guard at home depot that came 6inches by 36 inches(which was a pretty good starting size) and the best part is it was only 2 bucks. The project took me about 2 hours, mostly because i didnt have proper cutting tools and because the people that previously detailed my bumper lost all the bottom clips and decided to use screws, but it was still fairly simple. here are some pics(sorry it was dark when i finished)