On Radiant #255 I am replacing the hand pump with a left hand Whale galley foot pump Mk lll, so I can wash both hands simultaneously. The pump body is installed in the locker forward of the head where the overboard discharge seacock is. The old hand pump hole has been covered by a teak hand soap dispenser and a Whale collapsible spigot installed between the sink and the mirror.
Search the forum for "pump" to find photos of the installation I based my project on.