Duh, RWD project, of course no shaft issues! Haha. I guess the concern is you end up with too much caster to put the wheel in the middle of the arch.
Yeah that looks like the one. It's the same fitment as a mk2 Astra ARB. I've welded some captive nuts in box section along where it was reqiuired to bolt at either end, no support required in the middle