Cats on TTI exhaust system

Nothing wrong with a catalytic converter, automotive standard is 300 cell. must be big enough for the power. heat insulating to the floor necessary! Put the cat as much forward you can for fast heating up. Run it with Efi and a professionall tune. This will be a high dollar invest. You have to run it rich 0.85 under high load to prefent cats from melting. A good cat will kill almost no power.