Dave I think once you get started you might be surprised. The doors on mine have some of the typical jute/horsehair/tar/linseed oil mat GM used so often attached (not on the door skin but on the inside area). As a boy I got to visit a factory that made that stuff for GM and other automakers. I'm certain this was put there by the factory before the skin was attached. It helps somewhat but there isn't a terrific amount you can do without adding upholstery/padding to the inner side of your doors (which I don't really like). I used foil wrapped fiberglass insulation between the headliner and top (the same stuff HVAC installers use on ductwork) and that's also helpful. Masking tape will hold it in place while you install the headliner. Originally there would have been that jute/horsehair mat I mentioned before, but I had the HVAC stuff from work I had done under the house so I used it. Note: if you do this, run it under the bow that separates the two pieces of fiberboard. On the floor I bought a big piece of 1/8" self-adhesive neoprene sponge and added some thick radiant foil barrier material on top of it using 2 sided adhesive (I could have used spray-on adhesive). You can see some of that in the attached image. Also run it under the seat...it will keep things from rattling under there (things like a jack, lug wrench, etc). For years in the 60s I drove a 1951 GMC half-ton pickup and it was actually fairly quiet. Before I gave it to a friend, I removed the floor mat to clean it well and paint it with tire black and I saw one reason it was more quiet. A previous owner had done what used car salesmen I knew sometimes did. He had taken newspaper made wet with papier-mache solution (seems it was water, flour and salt...maybe it was rice flour) and laminated that all across the floorboard under the mat. When it dried (and around here it doesn't take long), it became a form-fitting thing that resembled an egg carton and I could see he had painted the top with either varnish, varathane or something to give it more strength. It does stop floorboard noise for certain and isn't expensive. Just about anything you do will help. As for the radio, you can listen just fine in my experience unless you're trying to drive too fast. These trucks have serious wind noise problems at highway speed (even really well sealed) and that more than anything will make the radio difficult to hear. In fact having driven these several hundred miles at a time, I would say wind noise is what made those trips more tiring. However in defense of them, I will say nothing has been as tiring as a 300 mile trip I made in an IH Scout around 1966.
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
