Looking for Package Tray Panel (Tonneau Cover) part numbers

[dweinberg01]

Hello,

I have a 1999 4runner with the cover that extends out from the back seat headrest and connects right before the rear hatch. I need the part numbers for the endcaps on the tonneau cover where it connects to the sides of the truck, not the brackets that are attached to sides. I have gone through a bunch of toyota dealer websites trying to find the numbers, but the pictures on the websites suck and I can't even tell what the item even is.   Any help would be be appreciated. Thank you.