2A, around '66-67. It was an Australia-only improvement to, as you said, make the diffs 35% stronger, through improved metallurgy. Great to see there are still hidden gems out there to be found. It's only a pity I can't bend space and time to make travelling places a bit cheaper!!
Dan.
69 2A 88" pet4 (still in disguise), 68 2B FC pet6 (resting quietly), plus 13 others.


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