Hey, what kind of distressing are you going for? You can always paint and sand for a layered effect. You could sand off the new finish to expose the metal. There are many different ways to treat metal for different aged affects. Or I've seen people attach wood around the body for a more rustic look.
Here are some resources!
I would paint it. Spray paint works really well!
Thank you, am looking for a wet redish rust look. If that makes any sense, kinda like a rusted corrugated metal roof
There's a cool DIxie Bell paint product you can use, here's a tutorial for a rusty patina -