Right side catalytic converter is about to go on my 2004 H2. I have a cat back after market exhaust that was installed when I bought it. Corsa I think. I'm considering upgrading cat forward with low restriction cats and headers.
Any suggestions or warnings would be appreciated. I would love to be able to do this myself. That would mean complete bolt on - no welding.

Thanks in advance.

 

You could do long tubes or shorties and high flow cats. If you dont have emission issues in your state then off road y-pipe should do the trick. I know of a member on here that installed the ebay long tube stainless steel headers with the dummy cats and he said they install easy, sound and perform great. Those are about $500 for the kit. Or if you want to pay for the name, Im sure Kook's, AMR headers or SSW make some. Im doing Edelbrock shorties I removed from my GMC HD. They are a direct replacement on my H2.I might gut out my cats.