That is a loaded question. It comes down to how much sound you want and how much drone you can stand. When I cut my resonators and welded 2 flowmaster 40s in place of the suitcase mufflers. The drone was loud. I got use to them, until I changed my whole exhuast out. Most people that use the mufflers in the place where the resonators were experience a lot less drone noise. So I guess it goes back to what I said earlier. Good luck and let us know what you decide on and how it works out for you.