I've got mine and have them pop riveted in. Well... the front rivets anyway. I can't get a good angle on the rear rivets just yet.
In fact, on the driver side, it looks like the rear hole has been covered up. I'll have to poke around and make sure it isn't covered with some kind of filler before I drill a hole in my frame rail for it.
So yeah, my splash shields should be pretty well sorted out, once I get the front ones in the mail and verify that I have the correct hardware for it all.
The last remaining part is that weird rectangular hole. WHY DO YOU EXIST, HOLE?! WHAT IS YOUR PURPOSE?!