Check your tires too, my Cruze is silent as can be on the highway when all music is off.Sorry for the long time to respond! Thing's came up and Project got delayed. Currently I Have 2 Alpine Type R's 2D's, 4 Type R 6 1/2 in the doors. With an Alpine mrp-m2000 Amp for the subs, and I cant remember the wattage on the Kenwood for the door speakers I bought it a long time ago. But as far as the Matting goes, Yes the trunk is done and as far as the interior I'm more interested in to reducing noise pollution I noticed that road noise is pretty loud in the Cruze on the highway. So, maybe I should start by asking if mattng Is even what I need for that?