65 Barracuda Trim Replacement

I finally got around to replacing this piece of trim below the rear window of my '65 Barracuda:

Window trim.jpg

I got a replacement with the car. Now that it's not too hot to crawl under that window, I discovered that the studs holding this in place aren't behind the black plastic caps like the center pieces, but instead they are behind another piece of sheetmetal on the inside:
1000005141.jpg
Zooming on the picture, those aren't hexes in the middle of those fasteners. Do they just pry out? I'm sure it's not too complicated, but I hate to just go in there with a pry bar and find out it's something different, but equally simple. And of course it's in a spot I can't get into to get a real good look. Bifocals suck sometimes!