Yes to all of this. Also if you look at a factory exhaust on the 5.0 and look at the resonators. You will see on each resonator a strategic dent in different spots between both banks. his is to cause a disruption and help delete drone. Even a simple bend in the exhaust piping can cause more drone or less drone as well as the material the pipe is made from. I love this stuff and waiting to start fluids class lol. There are many ways to do this honestly and to each their own.