Yes you do need to remove the prop. 4 bolts where the prop meets the diff. You will also need to pull the half shafts a few inches out on either side, to disengage them from the diff. This can be done by unbolting the whole hub asembly from the ends of the axle. 4 bolts each end, though you will have to diconect breaks as well doing it this way. The diff should come out the front of the axle (asuming rear diff) still mounted in it's bit of axle casing, as it is a 'bango' type diff, and not a 'sailsbury' type like in the 4trak.

Any veiws expresed in this thread by me are purely from my own experience, and (sometimes) falible memory. Hope my comments help, but please don't take them as gospel.