I know some engines are designed to have so much back pressure and then other engines will benefit from having less back pressure than what is put on the car to control emissions and noise.

I have a 2004 N/A running no muffler. Can anyone tell me if effiency/performance wise i would benefit from removing the rear set of cats? If i ever had to pass emissions they would still see the front cats, and i really don't like having to mess with the oxygen sensors so i want to start with deleting the rear cats.

Edit* Sorry when i jumped in this thread i didn't realize it was the SRT-6 section.