Don't know off hand.. but yes the 2x4 and 4x4 steering boxes have different size input shafts....
How do i know this? I thought i had all my parts together for my 1 ton axle swap, and crossover steering.. Well when i installed everything and then went to hook up my rag joint i realized the 4x4 box had a bigger shaft, and my old rag joint would not work on my 2wd steering box for crossover steering.
So just when i thought i had all my ducks in a row, i had to go to the junkyard to get a 2wd rag joint to complete my swap. I grabbed 2 so i'd have a spare in my tool box. /forums/images/graemlins/waytogo.gif