you would be better off lending an engine crane thing. i changed the clutch on my discovery out side the house on the road.
remove propshafts and take out half the bolts on the bell housing, take off gear box mounts disconnect clutch slave cylinder,take out the center console open front door and position engine crane through the open door.
put a chain through the gear stick hole and a strap round the middle of the box, although i found it a lot easier to put a small engine chain pully block on the end of the engine hoist. this way you can control the box while working underneath the vehicle.
lower the gearbox untill you can get the top bell housing bolts and the cable to the reverse switch. remove the top plastic cover on the radiator fan cover so it dont get snagged up when the engine tilts back. stick the jack under the front of the engine to stop it dropping forward when the box is removed.
work the box off the engine making sure it is balanced (makes it easier to handle on your own) slip the box off and use the chain pullies to lower the box as you hold it. it took me two days to remove box, fit clutch and refit the box and i have never done a discovery box before.
the local garage told he it was a b*stard of a job to do and was supprised when i took the clutch aligning tool back and told them i did the job on my own. its an arkward job and the box is very heavy but if you get the strap in a position so the box is perfectly balenced when you lift it back in you will find you are able to move it quite easy and if you use the engine hoist chain pully with the lift chain through the gear stick hole you can lift it and position it on your own quite easily.
its not really as difficult as i was expecting.
