I was hoping some one could link me to a good write up or explain how to do this:

I have a 231 with Tera 4:1 kit, its a 21 spline input. Can I remove the input from my stock 23 spline case and swap it with the 21 spline input in the 231/Tera 4:1 case??

I have taken both cases apart and my concern is the plantary gears,
Will the stock input work with the 4:1 plantery gears?
How do I pull the inputs out with out messing up the Plantary gears?

Thanks inadvace

The two different planetaries won't mesh.

If you can't use it and decide to sell it pm me a price. :D

Any news on that?

I have found a 21 splines terra-low for a good price,but I need a 23 splines units..