My pump went some years ago. It just started leaking from the little indents on top. I came to the conclusion that it was a unique part. I was rescued by someone on this forum who let me have a pump for a nominal sum. Without the support of the people here, I am afraid I would have scrapped the vehicle.
Since then I have insured myself against future such catastrophes by purchasing a complete donor vehicle.
Not much help I know, but that's my experience. For me, a 3200 without a donor vehicle in the background would not be financially viable.