Serious Body Rust Below Driver's Side

Anything can be replaced - it's just time, money, parts, and effort. If you are willing and able to acquire the parts, then it can be done, regardless of whether people think it should be done. My project was one of those "never should have even tried" kind of projects. But we did it anyway and found a way to do it without bankrupting myself. It was worth it in the end just to say we did it. Plenty of people would tell you to ditch that and find a cleaner body, but you do what you want with it. As long as you are committed or willing to throw in the towel at some point, I say go for it.