If you have a part-time system, I wouldn't worry about having a 3.55 in one end and a 3.54 in the other end, because you're not going to be putting it into 4WD on the pavement anyway. In the dirt, there will be enough slippage that the slight difference in geqr ratios won't hurt.

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.