[Mike C]

That cone clutch posi is an Auburn and not at Eaton. I would never discourage someone from doing the work and learning a skill. I will buy a $1000 worth of tools to save $250. And have NEVER regretted it.

But when someone can't even take the time to figure out the gear ratio in the truck by using Google to come up with ways to answer that question, I figure they won't put much effort in learning to set up a differential which is not just guess work and shouldn't be taken on if not going to go all the way. Like working on it over the winter with plenty of time.

And SpecialK is right on as usual with his analysis.

So for someone new without a whole bunch of interest in learning a technical skill that will require a significant investment in tools in order to do correctly, the best option is to determine what you have and what you want, and buy a used complete setup that fits that goal.