Okay so I'm kinda new to subaru's, at least modifying them anyway, and my friend and I have this idea to put a turbo charged 2007 WRX engine into his current 2007 impreza. Now we don't have a budget yet, we're playing with this idea to see if it's even worth doing, because his car already has a number of cosmetic and a few performance modifications and the next thing he wants to do is make it into a sleeper or at least sleeperish. His impreza is a 5 speed manual, and I've looked up the gear ratios for the same year in 5 speed non turbo and 5 speed turbo and their not THAT different but I digress. Anyway the whole point of why I'm here asking this is question is: what goes into doing a swap like this. What needs to be done to the entire car for this to work and NOT be a complete waste. Any and all help is much welcome and very appreciated!