Sunroof drains run down the A & C pillars and if they are plugged, the first indication is water spots on the headliner, so not likely.

Evaporator drain runs thru the firewall on pax side, so not likely.

Window seals leaking would most likely allow water to run down the window, thru the door, and out the door drain at the bottom corner.

Even if the cowl drain were missing, the water would just run out the drain hole into the engine bay. A hole rusted in the bottom of the cowl, however, is possibile.

Door seals - possible, not likely.

The most common of this type leak in the 123 car is winshield seal and hood-hinge cavity.

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