What is required to convert a Forester 2.0x To a turbo version 2.Oxt? Where I live you cannot buy the forester with a turbo, so I would like to do my own conversion

Where do you live? Filling out your profile helps us immensely there. ;)

Basically, I would recommend buying a complete JDM STi drivetrain and having it all installed at once, wiring included. You would have an OEM quality engine and motor with no issues from trying to make mismatched components work. I wouldn't try building a turbo kit for your existing engine however. It's just too easy to break the motor under boost.

I would beg and plead to get the Forester STi engine and plant it in to make a beast!!!