Does anyone have any suggestions or recommendations for what equipment should get to put in my '05 regular cab Colorado? I want a new deck, speakers, amp and sub. Nothing too outrageous like an MTX Jackhammer but I am willing to spend up to $500 or $600. I have a Zune and would like a stereo which has a direct hookup to it through USB if one exists (stupid IPod monopoly on everything). The only problem in the way is the fact that I can not fit a sub inside the box and it would have to be in the box of the truck. Would it still produce good audible sound in the cab?