So before I start getting a box built I wanted to get some of your guys's opinion on my setup. I am going to have 2 DC XL 10" M1 subs powered by a DC 3.5K in a 2007 Nissan Sentra Spec V Trunk which has a V brace in the back and the back seats done fold down. I have a few ideas on the box and the first one being subs back and port up (car has 2 6x9 holes in the rear deck) Other option being subs back port back. I am contemplating doing this because I am worried about having a tin of trunk rattle. I have sound deadened my trunk but am still worried about rattle. In your opinion would my first option be suitable and still be musical or should I go with my second option and deaden more?