I've been needing to buy something for the winter, I also help out on a farm from time to time. So I was looking into getting a powerstroke(to stick with Fords). Now, I have my mind set on the 7.3, I know a little bit about diesels, but Im sure some of you out there know a little bit more. So Im asking, whats good aftermarket, whats some things I can do to help out with mpg's, what should I do to make it run better, etc?