E30 Zone

So my 87 roof panel is not in the best condition. I have searched a few times but have not found a replacement or any one doing it them self! So does any one know of a thread or something that can help me to replace this?

http://www.e30zone.net/modules.php?name ... c&t=243489

I guessed I worded that wrong I'm looking for the liner not the panel! Oops sorry