Thx for the reply! Ya I really liked the sound of the Alpine PDX-5 or even the more SQ PDX-F6(less channels but perfect with no rear stage)but after checking out the Zed Audio Amps I was really leaning that way. They are definitely a bit more, larger, but could probably fit one of the Zeds. So battery. Can I just run one XS or are you talking multiple action. I'm really not doing that big of a system I don't think... I should be able to get by with just one good battery? As far as the sub I took at look at the lesser expensive one first...but the depth is the same like 6". So basically I just need to find a prefab box that a tad over 6" right(or do I need a bit of room behind the sub for proper install)? I kinda figured I'd run rear stage of the deck power just in case I felt like I wanted a lil' fill. I main attention was always on the front stage. That's the setup I did on my Maxima years ago. It's sounded really nice and it was really loud. It was a three amp setup.