There is felt window sweep installed on the body as well as on the window garnish. The sweeps keep the glass from contacting the body eliminating rattling and some water penetration. They also aid in the stabilization of the glass as the window is rolled up.
Here are two pictures showing how to install the clips onto the sweep and what your final installation might look like.
![[Linked Image from i1321.photobucket.com]](http://i1321.photobucket.com/albums/u560/41chevymike/IMG_4207_zpseottxolv.jpg)
![[Linked Image from i1321.photobucket.com]](http://i1321.photobucket.com/albums/u560/41chevymike/IMG_4210_zpsf0pqiyu9.jpg)
I have additional pictures and can help with installing the weatherstrip that is attached to the window opening.
I am assuming that a 38 would be the same as what was done through out the 40's???
Good luck, Mike
P.S. I think the ebay picture shows the felt strips as they appear on a door
Weatherstrip kit for 38 Chevy