Check plastic panels and the drain, but the foam gasket holding the airbox dry rots over time. I use a waterproof construction glue/sealer, which gives a flexible seal that also holds the airbox in place.
yeah, i have a 2005 Saab 93 ARC convertible and its not leaking from the top, its just in the front and back floorboard passenger side, so it has to be where the rain is running down fast, because even light rain will get them both soaked, but the fact its reaching the back concerns me, because its either really a lot of rain coming in , and or there's a secondary leak...this video is a big deal thanks so much...