I'm finally ready to swap gears. I have decided to stay with 33" tires and not go any bigger. It is my DD and will unfortunatly see limited off road use. Two weeks ago I went in the Big Horn Mountains of Wyoming and did some great wheeling on some difficult trails. I was with some very modified and locked up vehicles. I had no problem keeping up and even amazed the people I was with. So now I want to regain some power and mileage. My 05 Unlimited has a Automatic trany. I can't decide if 4:56 will be too much or if 4:10 will be too little. 4:27 unfortunatly is not offered for the Dana 30. ANy suggestions? Thanks  

even 4:88's is a very wise choice for 33's and give it back the stock spunk.
I put 4:88's in my rubicon with 34" tires and the spedo is barely off.(4:10 stock)
with the 4:56's you will find some situations where 4.0 won't move at all unless low range is used. (automatic tranny),especially in reverse.
the stock rubicons get about 1 or 2 mpg less than the wranglers depending on your driving style.  

Well I was all set for 4:10s but now I'm leaning towards the 4:56. By the time I'm done adding a rack, Tuffy storage and other things everyone keeps suggesting the 4:56s. I just don't know anyone who has either set up. Thanks again.  

4:10's definatly won't cut the mustard turning 33's unless you managed to get at least 300hp out of the 4.0, the 4:56's will work but I think the 4:88's are way better,
Hope it works out for you.