Can anyone identify these 2 parts??

[Cuda Hunter]

It appears that the rivet is holding a product to the metal in one picture.
Is that fabric, rubber or plastic?

 

[gran coupe john]

I believe it is that card board from headliner or sail panels?

 

[Cuda Hunter]

I believe it is that card board from headliner or sail panels?

That's what I was thinking.
I've not had a Gran Coupe yet so not terribly familiar.
Someone here knows exactly where that goes.