I have 2-15" Kicker competion's in a sealed box faceing up right below the rear deck the only holes in the rear deck are where I took the 6x9's out. It's loud but seems to get louder and tighter when the trunk is open. Do I need holes in the rear deck to let more bass through or what? If so does anybody have any pics of this done and how it looks. I don't mind cutting the rear deck but I want it to look good and I don't want to have to do it more than once(like most things done to my car). Thanks for any help.