I am in the process of putting in a new sound system right now. I've removed the Mach 460 and all of my aftermarket stuff has come in. I am just realizing how much of a p.i.t.a. an aftermarket system can be. First off, the single 12" box I got barely fits in my trunk, and faces horizontally to the other side of my trunk (it does not face toward the front or toward the back). I was gonna mount my amp to the box, but the only available room on the box is on the top of the box, but when mounted there, the amp doesn't allow the trunk to close all the way. So I guess I'll just have to let it sit on the floor of my trunk for now until spring when I do a custom enclosure. The enclosure I had in mind involves a rear seat delete, with the sub mounted on the back board piece of the seat delete. My question though, if I mount the sub here, it will face the front of the vehicle, will any sound quality be sacrificed by doing this? Will it be significantly less loud by facing it to the front, as opposed to the back? The sub is a Rockford Fosgate 4212 Punch, 400 watts rms. Thanks.