So. I got a really fat 15' sitting in my trunk which already hits around 137ish dB, and I'm about to put it in a better box that will make it hit atleast in the mid 140's and the rattle is insane, even though the sub and port are facing into the car with the seats down. I NEED to deaden my trunk because its getting out of control as it is.

Question is how am I suppose to go about this? I have absolutely NO idea how I'm suppose to get the material between the metal braces and the lid itself..

I already know what material I'm using, thats not the issue, I just need to find out HOW to actually install the deadener. I'd rather save money and learn about my car a little bit more and do it myself than pay my box dude to do it for me.

Any help? :D