here is the headliner board for my reg cab cut out for the sunroof:
in the truck with the sunroof in:
I ended up dropping $250 for an abs plastic headliner board as the oem ones are a soft, fiberboard that falls apart very easily after they are cut up. my original one fell apart, bought another one from a jy, it fell apart, so i finally dropped the coin for one that won't.
when it comes time to cover the board, it'll come out, be glued around the edges, wrapped over and glued down, then the center goes in with a rubber strip to hold it in place around the opening. here is a pic of it before the new board/interior colors.