DOOR GLASS RUN CHANNEL SEALS
Probably the same part
MN3104 - 1967-74 A-Body; 1966-70 B-Body Front Door Glass Channel Seals
IMHO.
having used the above kit... if your plastic parts are intact and the plastic liner / slide is intact refurbish it.
The kit works BUT, it is a cheap repo.
IIRC someone was showing the same strip for the rear window of a duster? ( Minus the plastic Hs