Now that the rack is in I have to have a pump. Using an engine driven pump is problematic because you have to give up the alternator belt tensioner and there is very little room for a reservoir. I chose to go with an electric hydraulic power steering pump. I managed to a find used pump from an MR-2 Spyder (go eBay!).
Mounting the pump is pretty straight forward since the three mounting locations are essentially in the plane perpendicular to the pump axis. So no complicated bracketry is required.