I was indeed since you asked what the "real" resonator was. That Vibrant looks to be exactly the same as the Magnaflow so expect some drone until it breaks in (and maybe some afterwards). As far as the other goes it might be a little more standard of a muffler since it doesnt say "straight through" but that might just be the "cooling" design covering a straight through-type muffler like the magnaflow which would still be prone to drone.