Roof Interior Panels; Recessed inserts

I am adding a used Pioneer Radio with some speakers just to add entertainment. But while adding new headliner to my cab, I realized I need a couple of small recessed panels (please see pic).
The panels are 4 1/2" x 3 1/4" x 1"D. The keep the window latch from hitting the roof when the rear window is swung up and open.

Any ideas where to get these, or something like it?

View attachment 180183

Roof Interior Panels; Recessed inserts