scrap or usable water pumps

[36tbird]

This is not fishing expedition to get prices or see if someone is interested. I, like most here, have built up a collection of assorted water pumps to be spares if necessary. This is a carry over from the days before they were being re-pro'd. So, I am trying to do a bit of house cleaning and just wonder if there is any reason to keep these now or should they go in the scrap metal pile. Seems to me that their only worth above scrap may be keeping the pulleys. Opinions?