I've got a feeling once you fit the box and get it out, you're going to fall out with the car as it'll be a (and don't take this the wrong way) harsh, noisey, laggy thing to drive...IME when people go mental with modifying their motors, it slowly becomes something they don't enjoy, my suggestion about going 2wd was moreso for the fact that you can have the power but keep a standard T5 'box, so the car remains nice to drive!