Has anyone seen these and know how they attach.

I believe the triangle shaped ones mount by the sail behind the the rear windows and the others mount above the windshield. You should be able to find factory screw holes which align with those on the pieces. I have a 70 dart with the headliner still installed, but slated to remove. If you can't find how to mount I can remove mine and take some pic's for you, just let em know.