when it rains, i have noticed a puddle forming next to the passenger rear wheelwell inside of my 240sx. i have not been able to track it down, and i thought it was the rear window seal. fortunately, yesterday when it was raining i got in my car and found out it was leaking at the top of the passenger side rear window. do they make a seal kit for this or am i going to have to knock the window out and do an entire new seal for it? it drips from the top down onto the wheelwell (no rear interior in my car) and then slowly forms a puddle on the sound deadening. my tail lights have been leaking as well, but i have the seal kit for each one, just haven't had time to install them yet.

 

I'd pull back the headliner, remove the plastics. And locate the specific problem area, then go from there. Repair it with some sealer, or if you do need a seal, atleast you can diagnose it before you spend money on the kit (not even sure if they make one)