what dv8110 said and i ment to say but didnt write very well..
All landrover diff carriers will fit into All (maybe not series one I havent tried that yet) landrover rover diff housings
I keep a spare 4.7 ready to go just incase.
Changing them over is easy and from "bang... hey whered all my drive go" to cmon dont put it away just cuck it in the back and we'll sort it when we get back" my rear diff record is 30 minutes (with air tools the wife to run the sealstic gun do the parts passing and with the storm water rising and threatening to cut us off from our already paid for holiday)
and I couldnt just select 4wd and keep going on the front diff cause the week before someone (I shall remain nameless) killed the front propshaft and had pulled it out.

