I have trush muff on my car along with other things, but when it was just the mufflers it was a nice mello low growl
I use thrush mufflers. My first set up
1. res with trush muff= no drone and mellow sound.
2 no res, replace with mufflers and thrush mufflers= deep v8 sound.
it's your car you should have it sound how you like it!!!