if you are going for the 4wd kit then you need to get the cradle off from the box

this means dropping the box (literaly) so you can get to the bolts to undo the cradle and unclip the selector
then it's a question of pulling the hwole caboodle apart (you need small screwdrivers and circlip pliers and a vice and a spanner and a punch and a chisel (screwdriver) to bend the locking tab over and a bit of hammering, that sort of thing) to get it in bits to swap the little lever thing apart

once it's all apart the metal bit pops out of the plastic housing, you refit this with the new one and away you go

with one hand (broken left wrist in plaster) it took me 5 hours, on me tod

the most difficult part of the whole swap is getting to the bolt on the drivers side of the transfer box (it's a left hand job ) but i think i've got some pics about