When fitted Lokka recently, did simple diff drop but only able to get 14mm without any mods to the brackets or lower cross member. I first used M16 nuts as spacers but then got alloy spacers made. The small amount has made a slight difference to CV angles when suspension fully extended(Sorry, I did not get pics to compare). The mod itself is very simple could be done in an hour. Hardest part is getting the bolts undone. I purchased 4 high tensile bolts 20mm longer total cost $40.
I had these alloy spacers made(my brother works for Hills)
Spacers fitted showing passenger's side front mount
Passenger's side bracket just clears draglink at 14mm, driver's side has a lot more room could do 20mm spacer
Crossmember under diff does not need to be modified still some clearance here