My “new-to-me” ‘85 F150 came adorned with a Summit aftermarket air filter housing. Like an Edelbrock. It needs a new filter bad, so I took it off to get a number.

the filter looks like it has been water soaked. It’s rusted on the back and the media is yellow/brown stained. When I took the lower filter housing off, water dumped out.

I realize it sits half way under the cowl, so I’m guessing a gasket is missing from the fire wall?