Seorsum, with regards to the intake question,
http://www.aleromod.com/forums/showt...ht=CAI+install - this is a link to the Cold air intake install thread.
You don't really need a component system for a great setup, if you get a good brand of 3 way 6x9s and 2 way 4x6s, you won't be disappointed.
On amazon.com:
6x9 infinity -
http://www.amazon.com/Infinity-Refer...s=infinity+6x9
4x6 infinity -
http://www.amazon.com/Infinity-Refer...s=infinity+4x6
I currently have these speakers installed and they sound amazing using only the built-in mosfet amp on my deck.