One other point too, the AWD will suck the life out of engine so while it will be good in the snow, you probably won't have the power to make it an issue in the first place. Fuel consumption will rise sharply too. I think Sweetcakes might be a little generous there on prices, would that be s/h parts? This might require an engineers attention I would have thought too. As all the others said, for a few bob more you could probably get a clean enough AWD, turbo or not.