jacking up l200

[wildplumdx]

looking at jacking up my 96 l200 about 50mm depending on what i can get outta the standard shocks which are near new kyb's, the front is torsion bars so easy jack up job there but as for the rear which is leafs? also will raising it 50mm make the road handling much diff ? would be keen to take it 100mm if poss ? standard shocks prolly wont allow tho, any guidance would be great