I got the division bar run channel from the Filling Station. I had assumed that it was the same as the rear run channel, which I got from Jim Carter, but discovered that those wouldn't fit. So I have two sets for the rear section. It's pretty universal, except for the size, and may be available at a local glass shop too. The Filling Station has rivet kits for the division bar as well, if you're needing them.
Here is some info on restoring the vent windows and installing run channels.