My "instructions" were for 68-70 B Bodies, every windshield I've ever removed or installed in a B Body (or any gasketed window for that matter) over the decades never had, nor used sealant inside the gasket bead to glass seal, including with the use of the newer so called "thinner" windshields on the market, one of which I have in my own Charger, and I do drive my car in the rain, ZERO leaks...