Here is an illustration I got off the site. Unfortunately they don't attach illustrations to all the parts inquiries. You'll probably need to look at each sub listing to determine which one you need or want. And again to see a picture of it. You may need to even check other years. I may be wrong, but I believe the rear piece is the same from 2003 up.
It's actually not that bad taking off the rear trim piece. I removed the part you are looking at replacing, and modified it on mine when I installed my rear view camera. Again. it's really not very difficult. Just be sure not to over tighten the nuts when reinstalling the exterior piece.