Thanks pvillebo.
OK, here is where I ground out the spot welds on the original center divider. I also added the flat plate for the dome light mount.
Final mock up of the headliner, fitted for size.
Dome light installed, still need to run wire.
Testing the glue on the headliner. I thought I'd try it without the padding for better adhesion but it looks much better with the padding. The countertop glue holds excellent and I have no fear of it seperating down the road.