I believe what you need is the same stuff used on the 1952 and other AD trucks and what is being sold today isn't very good at all. Problem is it was run using the wrong die and it won't make contact with the door. We've talked about this a couple of years ago and one fellow tried to get some more made but couldn't get enough support/commitment to make it financially work. Please take a look at the images below. The one in color shows what you'll get today. Look at how it lines up. The other image is what it ought to look like. Good luck!
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end