yea the w7 gets pretty loud but also has good sq
a ported 12'' gets pretty loud man...depends on the sub
a sql sub like a L7 or mofo ported get pretty loud
maybe a kicker kx650...thats what im going to run one with...well thinking about it anywaz....but u can check a kicker kx 750 or something like that...
the kx line is fairly cheap and sound pretty decent
check ebay
only a two way but they sound real nice....it has an extra output on the x-over so u could add another tweeter or something later if u want lol but it plays fine
http://cgi.ebay.com/DIAMOND-AUDIO-D661A-6-1-2-2way-Car-Component-System-NEW_W0QQitemZ300045633009QQihZ020QQcategoryZ32819QQrdZ1QQcmdZViewItem
there ya go bud