I have a 1.5" body lift, same as the one Lawrence got from Milners for £55 (his price was better) as far as mods to achieve it, you dont need any.
The break pipes, steering column and gearsticks all fit fine and dont need messing with. The rear bolts that bolt into the body itself are a pig because you cant get wd40 etc into the area and the pressure on the head is a good few inches from the area the bolt binds. So breaking one or two is possible.
If you dont its an easy lift, if you do you need to improvise. Most people are fine, just my truck likes to at bolts.
Fronty no.4, pimp mobile Treg 3.2 LWB lifted 2.5"
Fronty no.5 2.8 swb hd coils +2" 31"machos.