Hi everyone! I'm new here and hopefully you guys can help me out. My gf has an '04 mazda 3, and the other she found out both of the gravel shields were cracked. The Mazda dealer wants $300 bucks to fix them. Now - aren't gravel shields just pieces of plastic bolted on underneath? As in, something I could do in about 15 minutes? I'm also wondering what the part costs - I looked around online but couldn't find it. Any help you guys could give me would be awesome!