Pump for spinners

[Jimmy Buffett]

I am going to add another Softgloss to my site. I would like to set it up basically the same as the one that I have with spinners on entrance and replacing the wheel scrubbers. With my machine I had a prewash pump that we used to power the spinners. They really don't have enough pressure to power the spinners properly but I used what I had. The machine I bid on today does not have that pump so I will need to buy one. What could I use to power the spinners effectively? Space is also a consideration. Bringing in another auto into the E room is going to be a bit crowded.
Thanks