Tighter emmisions standards

For the guy with the bad convertor that would cost $1200. I had an old car that failed emissions. I knew it needed a new cat because when the exhaust was replaced, I saw that the element in the cst was gone. To replace it at the muffler shop was like $400. I said the hell with that and went out and bought a universal cat that was approximately the same length. Put it on and the car passed with flying colrs. So why not try a universal cat, mine was $30 instead on $300. Extra $100 to install at the shop. Oh, and I put the uni cat on myself.