Re: GEAR THIS!!!
4.56s are as deep as it goes for a model 20. But, I have another suggestion. Go with the 4.11s, and then later when you have more money do the TeraLow t-case conversion. I just did the TeraLow, the 4:1 low range with 4.11s would be all most anyone could want, especially if you drive your Jeep much on the street and don't have an OD trans.
Brad (from the 4 Wheeling center of the universe, 4 corners USA)