63-66 Windshield Lock Strip?

The correct original lockstrip with the ribbed texture and concave surface has been unavailable for years. The one you linked is what's generally available (because also used on '70s-'80s GMC and Chevrolet pickups). It doesn't have to be bought from Classic Industries; any windshield shop can still order it through regular channels.
Dan,

Was that a window pun? "regular channels" - window channels? LOL!