Scott, I never realized you would unbolt the front track from the vent window.
I've always pulled out that whole assembly.
But maybe that's why my bricknose has that different divider between the two.
The '80-'86 vent window frames I see on U-techcenter seem to have the front window channel attached too.
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.