I dread to enter into this convo but i have an auto transfer box here , its untested and the seller said he bought because he had problems and was then told his front diff had gone so replacing that instead solved the problem and the t-box was never fitted .
I bought it because it was close and because i expect to have to strip my manual transfer box so took a chance on the parts i need being inside the spare .
I don't know what to suggest but if you come across a manual box cheap we could swap ?