I just remember that I ended up putting gaskets on all the interior "flapper" doors even though there was no real evidence that any of those doors had ever had gaskets on them.
And there is no "gasket" for the inner and outer "suitcase" boxes to mount them to the firewall. Instead, the factory used 3M strip caulk or "dum-dum".
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI