Re: Running gear, 10 bolt front and 14 bolt rear
For the 14 bolt, there are two carriers. 3.73 only and 4.10 up. They never put anything taller than 3.73 gears in it. I don't know if they still do or not but they used to make a "thick" ring gear to work with the 3.73 carrier.
For 10 bolts the split is between 3.73 and 4.10 also. The 3-series carrier works from 2.73-3.73 and the 4-series carrier works from 4.10-5.13. However, just like the 14bolt you can get "thick" ring gears to go with the 3-series carrier.