This is the new pump. It looks
This is the new pump at the top of the photo. It looks much beefier than the one it replaces. I found there were several versions of this pump just for the MGB and at least two for the 1800 specifically. The one on the engine was a good match for a common MGB pump, so finding a spare will be easy. Removing the old pump is only a little bit fiddly, but the only problem encountered was that the bolts on the old pump were shorter so I had to search for longer bolts in my storage bucket for old bolts.