The left floorboard has been finished. When I got it, this side was grimed up, chipped, and rusty above and below. I just used a fine sandpaper to sand the rusty spots down to metal. I then applied POR-15, let it dry, sprayed some primer on and painted over the whole shebang.

Here are some shots from before and after. The floor rails were put back on, but I thought this was a clearer way of showing the progress.