What's up guys! Sorry for all of the posts lately but one last question. I built a box for a wall for my 2 hdc3 18s and it turns out that they will actually fit laying down with subs and port facing up. My question is, is there any benefit to building a wall and spending all the extra time and money for that? How much louder would a wall be, if even louder at all. I know subs up port back is the way to go but at this point I don't want to rebuild the box. Oh and it's in an 03 Tahoe with the second row seats still in. So the wall would be behind the bench seat. Thanks!