Kip,
Here are some photos I took of the vent window removal system I did on my 1940 Chevy. This is the system that you can slide the vent in or out as you like.
Vent window is in place with the driver's window rolled up.
Vent window being pulled out.
Photo showing the continous "C" channel that the vent window slides into.
Vent window with the "H" channel glued on.
Close up of the "H" channel.
Inside view of the vent window in place
