Headliner.....the dreaded task. 2 people are really needed, though I did it by myself and took pictures. Start by loosening all the screws in the top and sides of the windshield trim. Slide the front piece under trim, center it up. I found it neccessary to trim the cardboard that travels down the A pillar. Now insert the center bow. It can also be installed on the rear half, where Chevy would have crimped it. I couldn't get it to stay, so I did it seperately. The front goes into the higher channel, the rear the lower. It makes sense when you look at it. Line it up with the windlace retainer on both sides. Earlier models had screws in this piece. Slide rear half into center bow channel, center up and force as far in as possible. Trim the rear as needed. Install rear screw strip. I had a fitment issue with the rear corners, the same as I had with my truck. I have a replacement from Bebop's Repops that I will try and see if it is any better.