Im building an 84 Chevy Silverado and Im kinda new to audio, I already have a Kenwood KDC-MP735U head unit and a pair of Rockford Fosgate tweeters that Im putting in the dash. I plan on adding 4 more speakers(doors and behind the seat),2 subs, and an amp(maybe two). My question is which ones should i get. I think I want the whole system amplified. Also, the subs have to be shallow mount and I can build a sealed box. I want to spend around 1000 maybe 1500. Thanks in advance, Daniel