I have some rust on the floor and trunk pan of my project car, but nothing that seems to need more than light resurfacing and I'm trying to figure out the best way to clean it up. I've seen threads where people just hit it with a wire brush, some marine clean, and POR15 it, but that seems like it might be in cases where the rust is much worse. Should I try to use a rust dissolver as referenced in this thread Rust Dissolving liquids? or plan on attacking it by grinding with something like one of these 3M discs Rust never sleeps.... When I do get all the rust off it, what are some options to paint/coat it? I do not have a paint gun. Here's a picture of the worst of the floopans and the trunk.