What do I have

Yeah, something like that. It might be a good idea to compare the way the shoes are installed with the pictures in the FSM. While he says he installed them exactly the way they were, it is entirely possible the previous owner had them installed incorrectly (head to foot, or with springs crossed over wrong).
I'm the third owner, my dad was the 2 ND. I don't think it ever had brake work. I did compare to the factory manual. They are 10" shoes.