hey what can you do about the rattle that comes with every bass hit? any ideas

 

Take off the carpter liner on your trunk deck lid, then fill the holes & spaces with foam. (You have to use a certain kind or it can buckle your deck, I just cant remember what kind it is) Then re-install the carpet liner.... HUGE IMPROVEMENT! Someone else may remember what kinda foam you have to use, all I remember is that I got it at Homey Depot....

 

When it comes to rattlin rides the first thing is figure out what rattles. I've seen license plates, door handles, window frames and chrome trim rattle, on several different rides. the foam you want is minimally(?) expanding type, the other stuff triples in size.
as far as license plate frames and other external junk, double- sided tape works pretty well.