Update.
I went online at Spartan motor mall and acted like I was ordering the accumulator pistons. if you look at my earlier photo of the valve body in htis thread, you will notice that they are #6 & #9. well when I placed them in my shopping cart, it just updated the number of the SAME piston to two being ordered (is this making any sense?)

what I am saying is that they ARE the same.

funny thing. the same thing happened when I placed the springs in my shopping cart. they are the same also.