Eh? It's RWD with or without FWH. All they do is stop the half shafts turning the diff and prop shaft, which reduces a bit of drag. Unless the yellow knob is pressed in High range (or the box is in low), the front axle is not driven.
If it has Freewheel Hubs the bit of the hub that pokes through the wheel centre will be a lot bigger on the front than the rear, if you int got them they'll be the same sizeI love how threads develop on here
FWH...I have no bloody idea lol