My '87 has one and it dosen't leak a drop. I love it....works mint.
I have one What a leaking piece of crap. The best part of that hole in the roof is the drains dumping water inside the trunk gm could have run them out a little farther than they did. I ran the hose all the way out the bottom of the quater when I replaced my seal.Then I repaired the rusted quater and seam behind the seat.
Me. :wink: