Since I have not received a response, I am considering that option a dead end. I see what you mean about the 4.10. As I said before, I am happy with my stock 3/4 ton.
I wonder what it would take to mfg a 4.10 for the 3/4 ton rear axle? Do you think there would be enough buyers?
Or for that mater I wonder if you could make a 3.73 or similar. I imagine it would have to be a run of them, and they would be high dollar.