Seish

I bought a mustang a while back, and it came with a broken window and a beat up quarter panel, so I replaced the window completely, and the quarter panel was already cracked so I decided to replace that too. When I took off the quarter panel a clip broke off. So I bought another one, but I have a problem, I don't know how to get that clip in. Let me show a visual.




The circle is where the clip goes in. The arrows point to a panel I am trying to get off, but after looking underneath the liner, and looking for a screw to get that panel off, I couldn't find a screw or anything to get that panel off (the one that the arrows are pointing at.)

I know this is a little confusing and hard to explain, but let me show the panel I bought.



The clip is on the top right of the panel, you can see it clearly clips underneath the panel above the door. I need to figure out how to get that quarter panel IN, or how to take that panel above the passenger door off...

If anyone can help me, Thank you!