My friend has a 98 Accord V6 Sedan and i have a 96 civic coupe. I noticed how much quieter his ride is than mine, I just get more road noise. Is there any way to insulate the inside of my door panels or anything else? i did see some sort of liner for trunks but I think that was just for acoustics like for subs and stuff. Has anyone ever done this before or know of any way to do this?