Photo guide to removing a late Petrol van gearbox, early petrol and diesel will be different.
Jack the van, best to get both front and back up, I prefer to jack and lower on ramps (opposite so it can't roll off) or wooden blocks, this is my preference but there are many ways to jack a van.
Do your research and do what you are happy with because safety is important.
Clutch slave cylinder rear bolt, get a 13mm spanner in from engine side.

Front bolt is easier from underneath, 13mm spanner.

Tie the slave cylinder up.

Disconnect battery and remove starter connections, 13mm again.

Remove water pipes from clip above gearbox.

Remove nut from gearbox relay lever, 13mm.

Remove bush plate, note which side of gearbox is it, 13mm.
