If $330 is expensive for those hex's then I don't want to tell you what I payed for my 5.25 Focal Polyglass Components...Well since you're doing the Cam, I would say get some alright 6x9's for the rear cause they can take a beating as I've learned in my "pre-sub" days. They just aren't "as good"*personal preference* of sound quality as circular speakers. Because you have a huge trunk, use it wisely. Build a good box that will take advantage of the airspace you have available, but won't be outrageously large. The 10W7 is a great sub, I have had absolutly no regrets with it. The shop I go to back at home recommends those over the 12's just cause the sound quality is better. The 12's hit like a freakin beast, but they also need lot's of air space. As for websites, if you are starting to find out what brands you like and the models you are interested in. Throw them into Froogle and you can get decent price quotes on them, if you're looking for good deals that is.