The rubberized felt the glass rolls up into and slides? The "cat whiskers" at the horizontal bottom of the window?
The rubberized felt was also used by GM on pickup truck doors, starting in 1973, so it could well be available as "roll goods". Then you measure yours and cut to length and miter the corners before you glue the corners and such.
I haven't looked for C-body cat whiskers, so it might be necessary to modify from another application.
Just some thoughts,
CBODY67