Just trying to help. That is where i would draw the line before you fall down the slippery slope of getting good sound in car. I had maybe 20ft2 of deadner, Focal K2 speakers, morel tweeters, alpine 9886 running imprint software and a sundown SA12 in my last car. As with performance, cost is exponential to quality. If i were you maybe throw some sound deadening at the doors and roof but then you start down the slope. My .02