Well.....
You are going to brake some clips.
That molding is attached with special clips and is on pretty tight.
It starts at the pot metal chrome lower bezel with just the arrow on your picture.
That part bolts on from behind the headliner with 2 speed nuts.
Then you carefully remove the trim slowly.
I removed mine years ago and had it polished.
I had some extra clips from a parts car.
I sent my last extra clip to Wayne Miller in CA a month or so ago.
If you can pull the part number from the parts manual you might can find some at
Len Dawson's in Washington.
Here are a couple of pictures to help you.
View attachment 1715856340 View attachment 1715856351 View attachment 1715856353 View attachment 1715856354 View attachment 1715856355 View attachment 1715856356