No one makes the original seals. The originals had a plastic core. The replacements work and have what I assume is a foam core. Its called windlace.

Kanter is one source, but many people sell them.

https://www.kanter.com/pages/gallery.asp...;Router=Catalog

67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......