I have a 2001, F-350, 7.3, DRW, 4x4, 155,000 miles. My problem is the front axle, Dana 60? Everything is trashed except for the spindles and spider gears. I had brand new warn lock out hubs put on a month ago and they are already trashed. The mechanic estimated between $1,500 and $2,000. Could I just buy a whole new front axle, including hubs, for the same price and put it on myself? Looked at dynatrac's website and looks a little pricey. Can't find many other websites that carry the entire assembley. They are putting my front end back together and I'm picking it up tommorrow, hopefully it doesn't fall apart. Also I've been contimplating swaping out my 4.10's for 3.73's for better fuel economy and understand I would need to swap out the fronts also. What gears would match the 3.73's? Maybe now would be a good time for the conversion.How much difference in mileage could I expect? If this truck makes it another 200,000 miles and got 3mpg better that would be $10,000 at least. I forgot to say I tow regulary, usually 15,000 to 18,000 lbs. but am moving down to 8,000 to 12,000lb range. Thanks for the help!