Hey... has anyone come up with an aerodynamic chin spoiler for our trucks? Mine's an '04... looking for something like this:

http://images.musclemustangfastfords.com/features/mmfs_070031_17_z+2007_roush_nitemare+overhead.jpg

Just trying to eek a few more mpg outta my truck. I figure lowering the truck front and rear ought to help, but I'm wondering if anybody has a bolt-on chin spoiler to add to it...