I like the R/T exhaust...

 

But are looking for gains or sound?

 

If you don't use a cat, it'll gain a bit more power and it'll also be louder. Most gains that people feel are in their heads. The RTs cat-back is fine as far as performance. Uness you're planning on putting a lot more into the car, then you'll need a better flowing exhaust. Every mod helps benefit another.

 

Im looking for power
but if is better sound is good