I took a chance and got a set of channel runs from
ebay (from Thailand):
Door Window Glass Run Channel Felt Seal For Toyota Land Cruiser FJ80 1990-1998 | eBay - https://www.ebay.com/itm/Door-Window-Glass-Run-Channel-Felt-Seal-For-Toyota-Land-Cruiser-FJ80-1990-1998/154187421291?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
There's good and bad on that. Received it very quickly, about a week or so. Fronts fit perfectly, no issues. For installation, I had to take out the glass and fit the trim in the channel by squeezing and pushing it into the channel from the side. Pretty much disassemble and reassemble the door - but that's to be expected.
The rear windows are a different story. For some reason, the upper segment of the rubber trim is about an inch too long! Seller is aware of it, and said that some model land cruisers have a shorter window? (I thought all 80 series rear windows were the same). Anyhow, suggested cutting off the extra and gluing the ends together.
Now the existing rear runners will pull out and go back in with very little fuss. But there's no way I could feed the new ones in more than 3 or 4 inches before everything binds up tight. Even moving the window up, then pushing down on the rubber with the window got no further movement. Maybe the aftermarket runner is thicker than OEM, but for whatever reason - it wasn't going to go in by sliding down (even though that's what the factory manual says to do), and regardless of how much soap water I sprayed.
What I did to finally install was to remove the rear channel (top screw, middle bolt, bottom bolt) guide, remove the rear window. Install the front part of the runner (which I had to cut anyway to shorten) by pinching it and pushing it in the channel top to bottom. Inside the door, there's just enough room where I can work my hand through the door hole and manipulate the rubber into the channel. Then, I installed the window back in, getting the roller into the regulator guide. With the rear channel still out of the door, I put the rear half of the cut rubber runner into the channel, then carefully fed the runner back into the door and window. It's tricky to the get the top in the right position though - I ended up having it an inch too low, and had to pull on the rubber very hard to get to move a few mm each time. At least pulling up was possible, but no way to push it down.
The last part was to add some e6000 glue on the ends of the cut rubber to join them. Now that they were in the channel, it holds everything steady for the glue to set.
Doing the rear was ridiculously more work than the front. And maybe the Toyota OEM runs would have been easier to fit by sliding it in. I'll try windex on the remaining rear window but am not hopeful it'll make much difference.
Anyway, if you go with the Thailand part - that's what you have to look forward to. It'll work, but may not be worth the aggravation.
BZ