I'd like to attach something to the roof infront of the dome lights on that bump in the liner. Is there a place to secure something or is the metal roof of the car behind it? Definitely don't want the screws popping through the roof.
Any way to find those without dropping the headliner?Pretty sure the bumps are reinforcements for the roof. Should be u channel sheet metal.
A radio. Maybe a pound or two. My concern is I don't want to start screwing down the mounting bracket and then find the screw sticking through the roof.I don't know what you're mounting there as far as weight, but sometimes pop rivets or rivnuts can be a solution.
I looked at the pics in that thread, but you can't see the front of the car behind the dome light.