It will throw a bunch of dirt and water onto areas that are prone to rust in the rear. The front one keeps water and dirt off of the headlite and associated wires. I would put them back on.
Like Craig said it will fill the headlamp and it will fill the door hinge area full of water and debris. Also will fill the inner fender support and thats a bad idea.(inner brace from top to bottom of fender.)
Thanks, I tried. My welder doesn't really like welding thin stuff, so it doesn't look as good as I wanted.