would it be alright if i only had about 1 or 2 inches between the sub and the trunk lid? the 1-2 inches is after the ton of dynamat that i have to put on the lid, before the mat there would be about 3 inches? also if i build a box with the dimension of H= 15", W=40", depth or length=25", and top mount the sub, how would i port it and tune it? one more thing.... would it be ok if there was only about 1 in between the bottom of the sub and the bottem of the box? because there is a hole in the center of the magnet i am assuming for air movement?