The rear piece of the exhaust can be replaced if you just bent it at the upper part before it turns to go back into the muffler ... Ask me how I know!
You can order the factory part (+ 1 gasket - non reusable part) and then bolt it back up. I did this but at the same time had a muffler shop cut and throw on the 90 deg elbow so it exited the side. Toyota factory parts + 40 bucks for the muffler shop and done!