No, there is no comprehensive wheel fitment guide for EB's, mostly due to the fact that there are so many possible variables when it comes to lifts, aftermarket steering linkages, non-OE Dana 44 knuckles, etc.
Any semi-competent wheel/tire place should be willing to test fit any combination you may like to run. Most will say to stick with a 3.75" backspacing unless you have a 76-77, then 3.5" would be better. How is your rig currently setup (lift, cut or uncut, etc)? What size tire/wheel are you looking at? Obviously dubbing your EB with 20's is not going to require the same sort of input as a bone-stock rig. The more information you can provide, the more helpful the insight you might receive from others.