you'll have to do your homework on both fit and pricing
https://www.kijiji.ca/v-auto-body-parts/edmonton/1965-1966-chevrolet-biscayne-2-door-sedan-window-channel-seals/1411948029?enableSearchNavigationFlag=true
1960 GMC Short Fleet side 455 T400
1969 Chevelle Wagon 3 row #'s LM1 M20 ( project)