So when I bought my truck a month or so ago, it had rubber windshield gaskets but no windshield. It had been stored outside and I saw there was some rust around the gasket but, being a noob and a dummy, didn't think to be concerned about what was under it. I found this and this and this when I pulled the rubber off.

Now my goal with this restoration is to have a decent, working truck that works well, looks good, and doesn't leak. It's not going to be a show car by any means - I just want a cool old truck for hauling mulch and picking up loads of firewood.

With this in mind, what do I do about this part of the cab? Do I sand it down, prime it and fill the hole a bit with polyester filler and call it good? Or do I need to cut it out and weld in a replacement piece?

This will be my first attempt at any bodywork at all, so any advice you can offer will be helpful - speak slowly and use small words smile . I don't have much money to put into it, so the cheaper/simpler the better, within reason.