turbo help

i've got a 98 legacy gt and i want to put a turbo into it and i was wondering what kind of horsepower increase i could expect. I was also thinking about a wrx engine.

2.5L isnt made to handle high boost, and the headgasket WILL blow. This place isnt the place to look for information, goto www.nasioc.com and look around. There is a lot more information.

thanks for your help.