Question for 348 speciale owners

I recently bought a gently used speciale tail light grill. However, it appears to be missing two pieces that fit snug next to the corners of the lights. At least I am suspecting that two "pieces" fit into these spots. Not ever having seen a special grill off of the car, I am not quite sure. These pieces, I am guessing, are designed primarily to snap into place to cover up the mounting screws for the grill.

My question is, if these are indeed seperate pieces, can they be replaced? If not, I am thinking I can form some new ones. But are they made of metal? Fiberglas? Other? When I look at "Original Ferrari V8" by Bleumel, these pieces have a "strake pattern" imprint. Do you 348 speciale owners know what I am talking about? Any thoughts on a solution?

 

Dave...thanks for your reply. Do they "un snap" to expose the mounting screws if you wish to take the grill off? I would assume that they do, but just curious. Thanks again.