The door seal (weatherstriping) on my 1987 Tercel (3E engine, 2 door, hatchback) is starting to wear out. It looks very easy to replace (no glue, it's a friction fit, like a big O-ring around the perimeter of the door). Unfortunately the Toyota dealer can no longer get this part (not in inventory anywhere). And toyotaworld.com (where I've found other hard-to-find 1987 Tercel parts) doesn't carry it either.

Any suggestions on where I can get this part?

Thanks in advance!
-Ted