Gearing options

[Day]

What is the best gear ratio to install for 33 inch tires? I drive my Explorer daily and several times a year to Kentucky. I lack power now with 33's, but I still need some top speed for the interstate.

 

[RangerX]

What gears do you have now? I think the best would be 4.10, or 4.56 if you do much 4wheeling.