1975 A833 od, any useful parts for non od boxes

Yes; stronger od gear and 24 tooth stronger input gear.

You know now that I am thinking about this, the 18 toothers both came in a short-tail,with the 904 ms.
The 20 toother was in a longtail,727 ms.
IIRC
Lemme go check.I'll have to get back to you, we are in a blizzard here, but I'm fairly confident I have that right.