RHuddle56,

In the 1954/55-1st cab the front part of the front piece of headliner is held in place by the windshield rubber seal. Most of the sides of the front piece of headliner are held in place by the door windlace.

I think the three holes above the windshield are not used in any way to hold the headliner in place. There is a large hole on the left and right (above the windshield) with three screw holes for the inside sunvisors. Also, there might be two screwholes right above the middle of the windshield if a rear view mirror was ever installed (it was optional and not drilled at the factory).

Hinges can be quite tricky. Have you searched the entire forum on "hinges"? There have been several good discussions of this topic.

Good luck,
Tim