Amayama says they have them, again. When I looked last year, they were discontinued.
You'll have to contact them to see if they actually have one. If the sunroof still moves, all you need is the glass.
I strongly recommend you install rear drain tubes in the front position and route them through the floor. The OEM design requires the inner fender to fill up before it drains into the rocker panel. This almost guarantees the sunroof will leak, you will have a wet floor, and your wiring harness joining connectors to the floors, on both sides, will corrode. It may take years after you install a new glass with a new seal, but it will happen.
Replacing the glass takes about half an hour. Use care when removing the trim around the sunroof, because it'll be brittle and I doubt you'll find replacements. After you get that off, the nuts on both sides will be obvious. Remove them, and then the glass.
Post back if you get a new glass panel from Amayama, I'm curious to know if they have them again (I need one for my 07-95). Toyota North America says they can't get them, and they're aren't in the UAE, that I can find.