Pioneer makes the D2 and Z1; I have the Z1 in mine and love it...it has a harddrive built into it that stores every audio cd you put in. Also since the Nav is on the harddrive it is faster; also voice navigated...I can get you a good deal on the system from an audio shop I used to work for...and as JT's Cruiser said if you aren't amping the system get something fairly efficient...for subs I like this enclosure
New Subwoofer Enclosure Fiberglass 2 X 10" Setup From Wicked Cas
That is what I would have gotten if I hadn't seen it after i started fiberglassing my own. If you have any questions just PM me
