List of Parts Needed

I just acquired the BODY of a Super RO-PS-2000int, and would like to set it up to use on my 135 gallon reef tank. However, I need all of the parts that go with the body. As far as I can tell, this includes the collection cup, gate valve (whole outlet assembly), and the pump itself. Do I need the BB HY2000s? What does the "s" at the end of the model mean? I can get the pump fairly easily, but the rest of the parts I need part numbers, where/how to get them, and what the pricing is. I've attached a picture of what I have-I need to know everything else that goes with it.

Thanks!