I recommend reading my experience with it and the guidance I received from the folks here on the forum. And the pictures. The felts fit on the inside of the glass channel, and you need to shave and smash them in order to fit. Smash it in a vise. The squeegee may need to be trimmed just a little.
https://67-72chevytrucks.com/vboard/...d.php?t=738367