Anyone have any experience with Rock Guard or gravel guard like products? I don't really like those rubberized undercoatings but want to provide a bit of protection to the inside of my wheel wells. Something I can spray with a paint gun preferably. thanks.

Check out 3M's rocker protector in a pouch (#08733), used with the 3M Accuspray gun. You can adjust the gun so the protector matches the OE texture. It should be on line at 3Mcollision.com.