23 to 18 spline what it takes and how good i'll be!

Yeah....

You can break almost, if not, any/everything if it wears out or you try hard enough.

the factory did things as to not have to warranty[if possible] like over engineer to play it safe.

it's his deal, if he wants 18..let'em do the 18.
nothing wrong with insurance if you have the cash...


Exactly….. My transmission out lasted my 8 3/4 that's why I have a Dana 60.