I think I may have finally found a source from Japan to buy Nissan OEM ring & pinion gear sets.
These ratios are not available in the North America – new or used.
They will take 6-8 weeks to arrive.
I am thinking of ordering two or more sets, and try one in a spare CLSD - at least for our local summer Solo courses.
Not sure yet, but I think they will be about $500 plus shipping from Las Vegas.
If you are interested - at about that price, let me know at the earliest and I will add it to my order.