I won't pretend to know anything about them and it would be a forum if you were to fit them i think , but , without thinking too much about it we are back to the limitations of the cv joints .
Strength and longevity needs to factor into your thinking there's no point in pushing limits if its only going to leave you bust and being towed home .
If we could move the front diff then lift options would be infinite , the trouble is the front propshaft goes over a chassis cross section with very little room for alteration (diff drop kits tilt rather than lower the diff) and to go under the cross section would have us rebuilding the whole front end .
It has crossed my mind while under the truck messing with things that a good fabricator could cut lower and strengthen that chassis cross section (which the diff bolts to iir) allowing us to drop the diff enough to fit maybe a 3 inch lift .
But that's a lot of work for not much gain and you will end up chasing your tail when you realize bash plates and god knows what else now need modified .
2 inch of the front and 3 or 4 at the rear and she's still Landcruiser tough , a body lift effects nothing at all other than a bit of messing about to refit bumpers .