I have 4 of these, they were in the box with window regulators and parts for the doors.
(http://i74.photobucket.com/albums/i266/zr1rob/IMG_0966.jpg)
Im not for sure either but mine are sitting on top of the inner quarter window on my charger on each side. I was gonna ask the same question soon.
They are what the rear seat side pads attach to
I was thinking that thats what they were there for is to hold the upper door pad
Thanks very much
Thank You!