Sorry to hear, man! I don't think the slugs like the aftermarket cats as much as the oem's but they target Toyota's. And depending on your model (and your state) you may be able to replace just 1 (if you had/they took both).
I made these Cat skids:
Primarily for offroad protection/armor though may help with theft deterrence. If nothing else, the scums will have to work a little harder and at least I got a chance to flip em off.
Cost of material was only about $20 but I would be embarrassed to admit how long they took me to build. Was kind of a spare time project. A skilled fabricator could likely knock these out quickly.
Good luck and hang in there.
Claim it on insurance.. Pay your deductible and get a check for the cost of part/labor. Then go buy a aftermarket one and have a muffler shop put it in. Chaching, payday for you cus those OEM cats are ridiculously expensive.