getting back to you on removing the head liner, I dont know about your rig but in my F150 the only screws I had to worry about whereholding the sun visors on, interior light, and the coat hooks. I think that was it I just removed the plastic for the A piller and the rear of the cab and the headliner dropped out. But I got rid of that truck about 5 years ago so I cant go out ant look.....sorry