What do I have for my power steering box??

[gaddied]

My 70 Cuda was updated to power steering long before I bought it. It works fine no problems with it. But I would like to find out what year and what it came off of.  I looked  and can't find any answers to my question of what year or make . Casting numbers I can make out are,
O or Q -3643012
R 13
date code , 154
It also has a large O on the web.
If anyone can help it would be great.