1975 A833 od, any useful parts for non od boxes

MR P, good to hear from you again.
The .73 is the most common. In fact I have never seen another 20 toother, besides mine. I bought it as a spare, cuz I had already blown up two other od boxes. I was very surprised to find a completely different set of gears in there.
First and second gears in the .73 box , appear to be as robust as any other box. The input gear appears to be the same as the 3.09 direct box with 22teeth.
My 3.09/direct box also has the 22tooth input, and I have been unable to hurt it.
The regular mopar 2.66 box has a 24 tooth input, which being plus 2 teeth, we all know that box is tuff as nails.
The 2.47 box has the biggest input of all at 25 teeth;that box probably has the most robust gears of all.