This is frickin awesome!  Let's see, I need em cause money's always tight, and when I have the cash I can't decide whether or not to go duals or single 4.7!  I got a smokin deal on a complete sas kit from a boardmember recently so funds are depleted, but this is the 2nd to last item I need to get my project started and get all my marlin parts out of storage and on my truck!  Plus with over 508,000 miles on the stock gears I'm sure they could use to be replaced!  You guys rock!