Allen -- ask to talk to Mike Taylor.
Someone with a parts catalog -- please back me up on this, but aren't the AD steering boxes all identical units from 3100 up to 6400??? That's why the rebuild kit I got worked -- it was labled for the little truck, but it worked on the big truck too because they're the same component.
I have a 3600 steering box and column here, sitting next to a steering box from a '51 6400 and they sure look identical to me.
Keep at it!
John
