Ok, i have done a few searches and it appears that our trunks are really well sealed. I am thinking about getting an Infinity Basslink 10in. powered sub. I do not have fold down seats or center rear armrest. I have read that some people have knocked out the metal ski pass plate. My car is leased, so if I do this is there a way to put it back in place? Also, does anyone have expereince with the sound with the plate unremoved. BTW, i have a sedan w/out HK. thanks.