#1. The vinyl headliner attaches to the tack strips.
#2. The vinyl headliner comes down to the top of the widows and down to the lower panels between rear doors and rear most windows. There should be the same material on the posts between the windows from the lower panel to top of window.
#3. Still looking for window channel myself, but it seems like it is similar to other channels. Also,There are rubber seal strips nailed to the wood framing that supports the window mechanism.
#4. Already covered.

Much luck and have fun!


Richard J Patrick - 1946 Suburban