Just snapped either the ring or pinion gear in rear diff by driving down the road!

Going to replace centre/s and do lockers and all that at the one time etc but heard at Mud Bulls that a toyota Dyna (small truck) dif centres are interchangable and a lot tougher than std with the Lux (94 model, 22r)
Is this correct? and if so what ratios do they come with, and where can i get some! Do they come with high pinion option?
Has anyone done it what do you reckon - Any help would or advice be appreciated! Thanks in Advance!

