Hi Fellas, I'm new to the forum. Just purchased a 1979 D150 club cab that seems pretty original with some engine and of course radio head unit modifications.
First thing I want to deal with is the water getting in the Cab. Floors are soaked after it rains. Surprisingly, This truck originally came with a moonroof, I haven't checked to see if its leaking, but I don't believe it is, because I don't see any water along the headliner anywhere. On top that, the vent windows don't seem to close all the way, even with a little force (I can see water dripping down into the door itself: specifically the bottom corner of the vent window that's closest to the front of the truck).
The seal around the vent window looks to be in good shape, not dry rotted and looks to be plenty pliable. I will take a pic to try and show what I'm talking about, but where should I start with trying to figure out why neither of the vent windows seem to close all the way? Thanks for your help in advance,
Dave

 

Vent windows, windows and door seals all need to be replaced with time. It's like they shrink. Front and rear glass leak also but a good glass shop can fill the voids with sealer.

 

I'll watch some youtube videos on replacing those seals to get a feel for if I'd like to do it myself. Will also call around to see what places charge for something like this, thanks for the advice buddy!