If you want to change the sound of your car, just mufflers isn't going to do the job. All mufflers do is muffle the sound, they might make it deeper, higher, louder, quieter, to a point, but the reality is the exaust is making the same sound. So what you need to do to get a different sound is a different mid-pipe, and headers make a big difference, and a cam would really change it. I had regular delta-flow 2 chamber flows and when I swapped to longtubes and an off road H pipe, really made a difference. Just changing mufflers I don't think you will be satisfied. Maby a little, but in no-time you'll be bored with it again, promise. It will still sound like a typical five-oh with a catback. I have heard dynomaxes on cars with full exaust and cams, and I think they sound really wicked. Dynomaxes are really good at bringing out the true sound of the engine. It's your engine that needs the change.