I finally got on the “Rugged Ridge Locking Fuel Door Cover, Steel – Black” (SKU 11229.03) from Morris 4X4 Center. The steel is hard. They supply four self tapping screws (not enough) with which you are to simply screw the cover over and onto the existing ring. I don’t see how the self tapping screws would ever get through the metal. The drill points were already dimpled, but still my new bit wandered on the hard steel; leaving a few holes slightly off center (bummer, but no one will notice unless I point it out). The screws supplies were dark, but not black. I substituted stainless steel screws, which I think looks better.
The cover was a smooth gloss black. I covered it with matte black Plasti Dip, so it would more closely match the bumpers.
If you buy this cover, be sure to take a good punch and really get a point where your drill bit won’t wander.
Overall, I like the cover.
Update: Doh! I noted later there are four tabs inside the cover. The four screws supplied were to have been screwed inside the cover and into the inside of the original recess., which would leave the original surrounding plastic largely unblemished should one want to remove the locking cover. Oh well, no matter. I like this look better anyway and have no intention of removing the locking cover.