Now that I bought my dana 60 F with 4.10s, I need to swap the 3.73 out of my 14 bolt ff. Is that hard to do??? I am thinking about buying a whole carrier and pinion support and just replacing the whole thing. I have never done gears before, so I don't know how well that will work. How tough is it to change 14 bolt gears? Got a set of 4.10s?