The guards come with eight (8) screws. You’ll notice that there are two sizes. The thicker screws go in the holes located on the outer edge of the tail lights; the thinner screws go in the holes toward the center of the vehicle. The bag also contains eight (8) spacers. They are all the same size. One suggestion we have is that you first thread a spacer onto one screw and then barely thread it into the hole, then do the other three screws.
We’re not ones to tell you what your vehicle should look like, but if it were up to us, we’d prefer seeing both guards in the same orientation as shown in the photo on this website. If you want to flip them, go for it, but that’s how they were designed.