well this new amp makes my car THUMP. and it moves so much more air my trunk rattles alot more so i bought "great stuff" expanding foam and did the trunk lid. it acted more like a glue than anything else and "glued" the trunk sheet metal to the frame. so i have that under wraps, now the panel where the licesn plate is is taking all the brunt of the pressure and rattles like whoa. but it seems to big of a gap to use the foam on and it accually work. any suggestions? im not going to mat because i dont want all the weight but i hate rattles. also behind the pillar plastic covers rattle. any ideas on a light weight way to get rid of this? DONT SAY DYNAMAT, but anything else is cool.