Hey guys. I know a ton of you have subwoofer boxes in the trunk. I currently have a single Kicker L7 12" sealed box powered by a mono 500W RMS Rockford amp in an Escalade which sounds great. Concerned that when I put it in the trunk of my 300c, I'm going to lose a lot of the Bass. Have any of you done mods to the rear deck or behind rear arm rest to vent / allow more bass into the cabin?