I just did Noico stuff on my trunk and doors. I am hoping that, if anything, the effort helped with making the speakers work better. However, even after all this effort, even with just doors and the trunk, it did not help too much with all the regular noises. The rear suspension is still garbage, the engine is still loud and the glass is way too thin. I am lucky I do not drive much on highways, as that is where this car's NVH is the worst. Unless the stereo is cranked up, it's going to be a painful drive.
I will be doing the floor and ceiling soon. Next year will be getting better tires too. My current Fuzions are way too loud. You get what you pay for