I have a 71 Elco. We just had our first rain of the season. The floor behind the driver side is wet. I notist this, end of rain season in spring, never checked it out, and now, I see I have a problem. The front and rear window leaked on this car when I bought it. Have taken care of those problems. I took the hose and ran water over the back window area, could not see a leak. I also have a hard cover on the bed, which has a leadge per part attached by the back window, I thought that may be where it leaks, but did not see a problem. The other funny thing, is ir is wet at the bottom floor part, none of the carpet wet running down the sides, like coming from the window, more like someone poured water in the lowest part of the floor. Any Ideas?

Check the front wall of the bed over the smuggler's box. Water collecting up front of the bed can find it's way in there pretty easily.