66 Barracuda headliner install problem

Removed all my carpeting due to a mouse living in luxury, after lifting the rear cargo steel panel there was a nest that appears to have been there a loooooong time all the headliner material was located there. Now all nice and clean deodorized new carpet installed. Headliner is next for me waiting on the delivery............I would imagine I will have to remove the glass front and rear


On my car which is all apart on the rotisserie- there are teeth like items that held my headliner in place front and rear. I am heading to the shop now so I can check the rear window for sure but the front still has them.
I believe in order to do the job 100% (which i have observed over time I believe you are that type Capt46 .lol!) you need the gasket removed to make that happen.
PM me is you want some pictures of mine with the gasket removed and I will get them for you.
Joe