Can I replace parts of my iPhone?

The iPhone 5s has recently been released. I would like to know if I could possibly replace the 5 battery with the 5s to increase battery life. If not are there other batteries that are better than the original that I could replace it with? And also, are there any better cameras that compatible with my iPhone? Could I switch the 5 camera with the 5s? Also if this is not possible please NICELY let me know. I'm only curious

Impossible

  • Would i be able to put parts from an iphone 5s in to an iphone 5? I was wondering i i could maybe interchange some parts from the 5s to the 5. The parts that i wanted to know if they would work are the sim tray, power button, mute switch, and volume buttons all from the 5s. So could someone please tell me if i could put the 5s parts in to the 5.
  • Which parts of my iPhone 5s can I sell? I have my iPhone 5s that I've taken apart everything's fine Screens not cracked or anything I'm just wondering which parts can I sell off of it and for how much?
  • Where to buy iPhone 4S replacement parts? I just got an iPhone 4S from a friend and it has a cracked screen, plus i think it could use a new lcd. So i'm looking for an LCD and Digitizer replacement. I already have someone who will fix it for 30 bucks. Where is the best place to buy the parts for less than $50? I just want parts that are quality and will not be any different from genuine apple parts.
  • Where can I buy parts like this that will work on the iphone 4? I want to switch out the graphics, internet receiver, 3G receiver, CPU, RAM and screen on my iphone 4 with parts that are much more powerful. Where do they sell these parts?