Flowmaster drone solved.

I'm still trying to fix the "drone" in my car. I have 2.5" Hooker long tube Headers with an X pipe and Magnaflow exhaust. I just added Vibrant 1142 3" "ultra quiet" resonators and while it did tone down the drone a bit....it didn't eliminate it. My next step is adding sound deading to the interior of the car to see how that helps.