Datsun Roadster Late 66 - 70 Open Air OVAL Intake Valve Vent Weatherstrip
Nissan referenced these in the bulletin as "New" and so they are being oval not round like the earlier or "former" as Nissan called the discontinued version.
Weatherstrip is slotted in the middle and simply slips over rotating metal plate in your car. The only difficulty being the effort to crawl underneath the dash to put them in!
Never again will you have cold air freezing your feet at night! Most people complain about their heaters not working without realizing that their valve vent weatherstrips are totally missing and streams of cold air are entering the passenger compartment!!
Spread open the center of the weatherstrip to install on the metal flap. See photo.