Replacing Audio System....help? Options

[Maggie73]

For Christmas, I would like to get my daughter a new head unit and all new speakers....while trying not to break the bank.

Amazon is my best source at the moment, so I wonder if any of you have researched replacing the speakers in the 8 speaker system and could steer me in the right direction?

I am looking for a pair of 1" tweeters, a pair of 4" speakers, a pair of 6.5" speakers for the back and "something" to replace the pair of 8" speakers in the door.

This is the head unit that she likes: http://www.amazon.com/gp/product/B0091UW7F...d=ATVPDKIKX0DER although I don't know if it's any good.

Also do I need any harnesses or anything? (I know nothing about car audio)

Any help would be GREATLY appreciated....thanks!

Oh and also, she would like some sort of amp and subwoofer w/box in the trunk (her dad is going to get it for her) but I don't know what to look for there either (nor does he).

Thanks again!