I have a spare 4x4 cos 1 u wuss
u will need
gearbox
gearbox mount
sump inc cross shaft
front prop
4x4 cos front diff ( xr4x4 1 is a diff ratio & will blow the box)
rear prop
engine mounts
front drive shafts
hubs
front brakes
front struts as these are diff to the 2wd
4x4 oil pick up pie to suit the sump
steering rack

would be easier to sell yours & buy a 4x4 as the floor will need modding as well