eh ur subs arent gonna be efficient before they are broken in. deadning the trunk wont make a "punch" diff in ur bass. also the closer to the back of the trunk , usually the louder it is. around 6" is the loudest. my trunk has no deadning and is still quite loud

try sealing the trunk vent tho. it makes a huge diff in very very low fequency response, at least in my car. im lookin forward to the vids!
also in your vid, roll the window down about 3/4th's the way on ur loudest song and make a piece of paper float in there. its quite fun