Thrust washers on lock rite D30

I searched but found no specific relevent information. I snagged a used lockright and it already had thrust washers on it. Now are these fromt he previous owner? or are these to be used in conjuction of my own from my diff?

It doesn't matter which ones you use as long as you have them, the ones you got with the locker are from the PO, the locker does not come with them. You only need one per side, I would use the ones that look to be in the best shape. You should be able to download a set of instructions off their site or they can mail them to you for free. You may need a different center pin depending on which axle you should ask them to be sure. I know I did for my 8.8.