Been there and done that. Our 47 had the same trouble. I got down inside the empty door shell and pop rivited one from another truck in it place. It going to be a *****, but you'll live though it. Remember to get rid of all the old one. Its spot welded at the top and the bottom both. I took a dremil tool, ground and cut out the old parts. May take an hour or so to get it all off, as here hardly any room to work. When drilling the rivits inside at the bottom, I had dennis look down though the top and tell them where I was at. Drill the holes in the lower end of the channel before you put it inside the door, so then you only have to drill though one piece of metal. I used a very small vice grip clamp to hold it to the bracket before drilling. Try to find a steel pop rivit, not an alumnum one.
