Last Sat we installed an air scoop in front windshield. Used a 2in wide 1/4 cup stainless measuring cup, cut the bottom and handle off, holesawed the wndow and finished to size with the air tool .Glued it in front and back with clear silicone.
Still need to get some 3m weatherstrip glue or similar [ used to call it Elephant snot back in the early seventies when we put it on our motorcycle bolt threads to keep from coming loose when racing the desert, it was yellow
] for the new door weathersriping .
jl222