Ok, please forgive me for this post. I feel like a complete idiot for 1) not knowing all that much about turbos, and 2) not being able to find (or understand) the information that was given to me when I did a search. I just need some straight answers... Ok a guy that I know recently bought a 2005 STi, he's upgrading his turbo and wants to part out with the stock STi one. My question is: If I get the turbo will I be able to use it on my 2002 WRX? Is it just a direct bolt on? If not, what kind of modifications would I need to perform in order to make it work? Or would it just be a complete waist of money and not work at all. Once again, sorry about this post and thanks for any help.