sadlerb_98

I took off my pro-flaps mud flaps this morning. The previous owner must have been drunk when he put them on. They looked uneven. In the process I noticed that the passenger side had a extension panel held on by one plastic rivet and the bolts from the mud flap. I am trying to find out what type of bolts held the outer side of the extension panel on: plastic rivets or bolts. I looked up the parts and this is what I found:

55276476aa
55276288aa

Pick up box, Front and side panels, Extension panel, Extension panel Right
Pick up box, Front and side panels, Extension panel, Extension panel Left

A good close up picture of your rear fender well looking towards the back of the truck and then towards the front would help me out.

Thanks!
Bob