Hey guys im new to this sight but not new to cars. Im a marine stationed in iraq right now with alot of spare time on my hands and some money. I just recently bought a 2004 subaru impreza wrx and ive studied a little about them but not to much. I have always wanted one but never new a whole lot about them. I was thinking about getting a 2.5 liter shortblock and an STI tubo to go with it and mount my 2.0 liter head on it. I was curious to know if this was a good or bad idea and what i kind of fuel injectors and tranny upgrades im gonna need to go along with the swap.