[Grandeos]

If you really want the "mailslot", then you would have to buy an SS front bumper.
I personally dont like the "mailslot" because it is fake, and not even functional. But to each his own...

It is also important to note that the Fog Lamps for the SS are in a different position, and might require modification to make them fit on an SS fascia. I believe the member who did this swap used the "plugs/covers" from the LS to cap the holes.