what kind of sound deadner did you use? and where did you put it? I was debating to put some in mine to cut down on road noise too, and the sound from the stereo will be a bonus.
rattle trap in combo with foam and i put it on the roof, doors, floor only place i didn't was under the front seats because it already has the rug there so basicly every surface i could reach
2010 Vibe & member of the yeargarage Email me if you need to talk to me, click my siggy and send the email threw the contact page.
I ordered some Boom mat in 12" squares, im going to gut the interior and put it all on the floor area under everything, hope this will help with the noise from under the car, it's my main concern.