I tried searching but my question is pretty vague so I couldn't really find anything...I have a 2000 OBS that I'd like to swap a turbo motor into sometime in the future. I'd like to just go the easiest (cheapest) route. Would this be a USDM EJ20T swap or maybe an EJ22T out of a Legacy? Which engines will bolt up with the minimum of fuss?

I'm not looking for any crazy power. I'd be happy building up from a stock WRX motor.