Just recall that if you have a 4x4 setup you really need to keep your front and rear wheel size matched or you are going to shread your drive train. Front and rear diffs can be setup for different gear sets and tire sizes but trying to mix and match is going to be a bit of a pickle and I doubt the match will be close enough with mis matched tire sizes to balance it out with two different gear sets. Also, the question I didn't see here is what is your definition of street gearing? Are we talking about highway driving, around town street and strip duty, or just cruising country back roads? If you are going the size of 33 inch tires then you are going to want to keep around 3.73 to 4.10. Smaller than that, say around 31 inch tall tires (which many people run in stock configuration) you will probably want to look at 3.55 to 3.73 with an OD trans. If you spend a lot of time driving at 70 you might even consider a 3.08 to 3.36 gear seat....