'89 4Runner steering box ID/seals

[krawlr]

I have a steering box from an '89 4Runner that I just finished tapping for hydro assist. Thought it would be a good idea to put new seals in it while I had it apart. It seems there were a few choices and since it was a JY unit I'm stuck trying to figure out which one I have. I know it's a pre 4/89 because it goes 4 and 3/4 turns stop-to-stop but I don't know how to tell if it's a 4cyl or 6cyl model. Any help on this or even better can M/C sell me what I need?