If you're seeing some there (common spot for it in rust belt areas of the country) - when you can, get it up on a lift and look on the transmission tunnel around the cats. I've heard a couple instances of them rusting around there, and it can be a tough area to repair.
Don't know if I mentioned it before, but LXFORUMS is a great resource for talk about these cars. They just upgraded software and that slowed down the participation a little bit, but the members are slowly filtering back in. It's a fairly active place.
Richard