My reproduction washer pump arrived over the weekend - so I swapped it out this evening. Not a bad repro part - does not have the Delco Remy stamp on the bottom of the stamped steel base and the plastic cover is slightly different. I was able to swap the original cover on the repro unit for now.
https://youtu.be/DrF1zx8_3_4
Also swapped out a throttle return spring to hopefully cure an issue with not returning to normal idle (weak spring). Slowly but surely getting things dialed in.