'59 impala manual steering box

I purchased a sterring box at a swap for ten bucks. The guy told me it was a '59 Impala. I need a pitman arm for it. Will the speedway gm arm work on this box? If not where might I find one. Any info will help.

Thanks.

 

Gonna use it on a 59? I don't think it will work for a 59 pitman arm.

 

I think i have one

 

I am using it on my truck.

 

Check and see if you do and would you be willing to part with it. $$

 

Old Ford ('35-'48) Pitman arms have the same splines as the GM Saginaw box you have.