Yeah, they can rot out and get damaged. And wear after time. Auto shops can charge a lot to do the work. I was told $300+ to toss a high flow on mine. If it is a Gen 3 (92-93), I'm sure it is only a bolt on. And those can be done easy. Others I am not sure about. You would have to take a look at yours. Whatever you order will match. If it is welded in, you will need to weld in the replacement.
http://www.performancecenter.com/
They have high flow cats for pretty much every model Camry. And there OEM matching. So they fit perfectly. They only run around $150. They will also pass emissions tests.
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