Yep, IFS power steering boxes pretty much handle the jandal... Its the common box used for crossover steer applications in Hiluxes and used by a few guys in 40-series crossovers... and I guess If Wopass can't kill his then they must be ok
Personally I'd go spring-over... why do all this work just to leave crap hanging about under the axles? Hilux axles have very good clearance compared to other ones, so I really think you would be better off keeping it that way... make some 10mm plates up and do a u-bolt flip while you're doing it (I can get you 75mm round U-bolts for the rear, but I think the front ones need to be made custom by a spring manufacturer... haven't sat down and spent too much time on that one)
Deranged can make you hi-steer arms as cheap as you'll get them anywhere, or you can do the steering arm flip that both I, Conan and Wopass are running. The advantage of Deranged's ones is that you get the tie rod up out of harms way...
Oh, and strip the front housing and plate up the front a little bit... they are quite thin, and prone to getting stoved in on rocks... not a good look if it gets stoved right in against the crown wheel on the diff...
Heres Conans one after 14kg of welding wire, half a bottle of gas, four square metres of 4mm plate steel, 3 days and 14 cans of black spray paint

He really went to town on it, but it will probably never break... ever... period.
Even if you just bend a strip of 40x3 bar up over the front edge of the crownwheel ridge and weld it in place, thats better than nothing.
Soliholuxidore? Commaluxover? JapAussiePomobile?