Any of you who have seen the headliner in my t-top coupe know it wasn't good, and was very home-made looking. Well, when I got this year's tax refund, I bought, among other things, Fiero Store ABS headlines for both cars. They don't make a t-top headliner, so I bought a no-sun-roof model to modify for the car. Basically, I installed it complete and then cut it for the t-tops. Here is the result:

I didn't take pictures while doing the job, but I took some after-the-fact pictures to explain what I did. First, I installed the headliner complete, as in a normal no-sun-roof car. After you have installed it, cut the cloth underneath where the dotted line is in this picture:

Remove the cloth in the middle, and peel it down from the foam rubber from the dotted line to a little past where it will still be after you cut the plastic. The best way to cut the plastic is to use a soldering iron or wood burning iron. I used a cheap Radio Shack 30-watt iron, but it was slow going, so a 45-watt iron might be better. Be very careful while cutting -- you don't want to burn past the plastic. You want to burn a line almost all the way though all the way around, and then tear the middle section out, like tearing paper along a perforation.
After you cut out the center part, spread contact cement along the metal part just below the weather seal. Then pull up the cloth and stick it to the metal. It should look like this:

Cut the cloth to just past the metal, and tuck the excess on the other side. Then replace the plastic edging, like this:

Note: This was done on a non-CJB car. I understand that the edging is part of the weather seal on CJB cars, and I'm not sure how to secure the cloth on those cars.