are you sure?
"I had the B&B Bullets on my car. It was one of my first mods. At first they were nice and loud, but they resonated a bit. Not too bad after I put in a sound partition. Then I added Long Tube headers and they were quite load. My wife stopped driving in the car with me. Then I added heads/cam and they were ridiculous with resonance. They were crazy loud too. I put on the GHL Bullets and have never been happier. No resonance I can detect, quiet cruising, and loud as heck when you get on it !
Just my experience. Everyone hears things differently. Sound is a very subjective topic around here.