I've just done this and it was an absolute nightmare.
Thread here:
https://the75andztclub.co.uk/forum/s...d.php?t=290819
The tool that worked was a US Pro 12 tonne ball joint separator - it's one big, heavy piece of kit.
https://images-na.ssl-images-amazon....1AkhPgrYJL.jpg
You'll need to drop the anti roll bar and the steering rack ball joint (cue wheel tracking) because the space is very tight but it can be done. I created a "well" in grease around the top of the ball joint and filled it with Plusgas and left it for several days to help.
Good luck.
Andy.