I have two of the original fresh water pumps that I am not using. We have gone to an on-demand pump.  They both functioned last time I tested them, but I don’t know what shape they are in now..  I believe both could be resurrected, or at least be a good source of parts.
if anyone wants them, I’m happy to give them to you for the cost of shipping.

Please contact me privately if you are interested.
Kent & Iris
Kristy SM243
karkauai@...
828-234-6819