Gears are in front and rear with 5.13 yukons! No noise from what I can tell now but its been bad weather raining a lot and have only drove about 30 miles on them. Plus the tires are so freaking loud its hard to tell, but right now no different than stock for sound.
I can't be more happy. These 5.13s are freakin awesome! It is way more responsive. My speed O is about 15 MPH off at 45 HAHA. He said they came out tight and went in tight so thats good. The guy took his time and I'm very pleased. He even picked me up a few miles away from the shop as well. He told me he was going to get it finished yesterday and he did. He even stayed 2.5 hrs later to get it just right and make sure it was 100% because he knows it is going to get tested. Will get pics of the stock 4.10 gears when I get some free time which might not be until next week. Funeral of an old friend and hometown neighbor this weekend.