Those are miserable water leaking cars have seen alot of different areas they leak from. For starters remove the headliner and be careful if it has airbags. Check the rear drain tubes (often get overlooked) for being plugged of pinched. There is a TSB for that. The front corners of the sunroof frame. Add strip calking to the seams where the frames come together. The most recent one was leaking under the roof rails for the luggage rack. The body seams not sealed in spots.

See attachment for the TSB. Very good information.