Mostly just inside the car. I was going to try dynamat under the carpet first. I was just going to pull up the carpet in the footwells for the driver and passenger (not going to take up the center console area or the front seats). Then I will pull up the carpet in the hatch and back seats and dynamat under there. Hopefully that fixes most of it, but if not, I will probably put a magnaflow cylinder muffler in place of one of the resonators.