So after listening to M5 and a couple other people on this forum who made great points to remove my 6.5" speakers from my rear deck I am glad you guys opened me up to a whole different world of sound in my car. Those 2-6.5" opening allow for so much bass to come through into the cabin of my car from the trunk its ridiculous, more ouput and better sound from my subs was gained. I used to be one of those guys who wanted millions of speakers in the interior of the car no matter where I could put them. I learned that the right placement, power, control(EQ'ing) would make up for more sound than a billion speakers in the ca (one friend used to tell me before I joined this site that any speaker I through in the car no matter if it was 2" to 6" would help out with the overall sound and would benefit, I called him yesterday to disagree and tell him my new findings). I have a quick question for you guys, I am going to fiberglass my rear deck after I dampen it: #1- I will dampen the rear deck but leave the two speaker holes(factory ones) in the rear deck uncovered so I will have a way to allow more bass in my cabin since I keep my seats up most of the time when playing music or driving around. I know that everybody on this site can find an advantage or disadvantage on why things should be done to help out with car audio, would this be an advantage or disadvantage for dampening everythind on the rear deck topside(cabin) and bottomside(trunk) but leave the speaker holes open for sound and pressure to get through? If it will benefit me to leave the holes open then I will just fiberglass around it which I think will add some creativity, just wanted to ask before I started on my rear deck. Thankx for input and .02's.