A little while ago I blasted the worst rust off the drivers side.
Then hit it with some etch primer.
Yup I did the whole bedside at one point, removed the rear bumper and all. Then I spraybomb'd it flat black, yeah I know, but guess what its already scratched up from being used as a truck should be used. At least it has rust no more.
Also picked up a dual headlight core support for $15, its got a little rust.