I've done 3 in the past 3 years all on my GN. They never seem to last more than a year. Talking ABS board, delivered with headliner material already glued on. Ready to install a 4th one when I get the time as the 3rd one has the material coming off the board again. Think it may have to do with them gluing it and immediately rolling it up and putting in the box for shipping. Goes in perfect and then within months you look up and damn, here we go again! This time I got the bare board and got the material separately. Going to have a local upholstery shop glue it up and see how this works out. At least the manufacturer covered all three replacements and shipping. Pretty sure they all come from the source but don't quote me on that.