I have looked into this, at least for my '97. You can't get headers because the cat sits right in the middle of the headers. I think this is done so that the heat from your engine will help the cat. So if someone made heades for the Rav they would have to also have a cat, or it would have to be moved. They might have headers for the 3sfe engine but the way the Rav's engine sits in the bay(leaning backwards), I don't think the header would work without major modifications.