I have put in a replacement headliner in my 54 1/2 ton (2 piece) but messed up the cardboard and it doesn't look as good as I'd like. I want to find some black plastic that will bend and cut easily but will attach in one piece. I figure I can trace around my old one and cut it close to accurate. Any ideas where I can find the material in a 3 x 4 sheet? ... or other options.