While searching at the local auto parts stores, it became apparent that the 4 turn boxes are getting hard to come by. I found that although many list them online, they are actually out of stock if they check. I ended up getting one from Napa that said it was a 3 7/16 turn out of a late 60's Chevy car. 4 bolt.
Was pleased when I went to install and got 4.25 rotations lock to lock. It is amazing how much it's steering manners have improved. Just need a slightly shorter pitman arm and it will be perfect!