i have a Lexus is300, and there is a metal plate between the back seat and the trunk, i think it is keeping the bass from getting in to the cab, any suggestions???
If your that desperate, then James's idea isn't that bad. Your not gonna see it, and it would make a difference. Just cut like 2 big holes in the metal or something. I personally cut 6 x 9 holes in my rear deck, and then put 6 x 9 grills over the holes, to make it look clean, as though there were speakers there when it's really just 2 holes. Those 2 little holes made a suprising difference.