Hey guys, I got a 04 G35X and Im thinking of replacing everything from the cats back. Which stock cats can I use to replace my failing ones (Strong chemical smell in car)? I'm not looking for performance, just a replacement. I will be mating them up with most likely a HR Y-pipe, M2 or Bosal Y-pipe.

Thanks for your help!

 

You can use the cats from 03-07 G coupes, 03-06 sedans both RWD and AWD, and 03-06 350Zs. They are all the same.