After trying out a smog test, my Jeep failed, but not by much. It was a no-brainer that a new catalytic converter would put me through the emissions test with flying colors. I had been searching through Craigslist and found an unused cat for $100. After picking it up, I also got a new MBRP universal stainless muffler for my ride. A stainless finish might seem extravagant for a budget build, but it was only $60!