well lads im thinkin of putting a bit of money into my bug wrx im going to set a goal as close to 400bhp as possible and its going to be over time i no the first things im going to need is clutch, brakes and gearbox turbo injectors etc etc but what about internally what will i need to build inside the engine to be sure of not blowing the thing into the sky just want to get a list of what i need and start puchasing like pistons for example is there any certain brand better than the other or should any forge piston be ok for that power.. all help is welcome so lets hear ur opinions!!