Window Glass Guide - Unsure of part name. Need one.

On an E-Body, there is a small bracket with felt that bolts near the top of the door. When you roll the window up and down, the glass glides along felt on these brackets. My Barracuda is missing one and I can't locate a replacement. Part of me problem may be that I do not know what it is called. I may end up just making one.

Anyone know what this part it? I am going to try to attach a photo but this is my first post on Moparts.

Thanks all!