The Stovebolt Site Forums The Shop Area Paint and Body Shop Doors 1949 Panel Truck Rear Door Guide Question

I'm currently fiddling with the doors on my '49 Panel and I'm a little baffled by how the rear window guide mounts inside the door. I don't think the guide was in the door or if it a was then it was in a box that came with it... so I ordered some aftermarket one (see pic).

I see where the lower two holes mount but I have no idea how the top end mounts. I don't see any holes that align. I've scoured the internet, the manuals and everything else I could think of and I came up empty. Other than continuing to scratch my head and scratch my butt.... anyone have a truck at a point that they could shoot me a picture to show the mount? Thanks in advance.