How do I change internal parts processor etc all, from my S3 Alpha and add it into my S4 4g power?

i can change iternnal parts procesor etc all ..from s3 alpha and ad in s4 4g power?

Nope... this isn't like a desktop, where the bits are plugged into a MB with common layouts and removable slots... the hardware components like the RAM, processors, are all part of the board.... a board which is custom designed for your exact phone's chassis.

Wait for Project Ara to start producing phones. Then you'll be able to. Everyone can have a custom-designed phone, and change the design at will, just like a desktop.