Technical Identify these Flathead Water Pumps?

Can anyone identify these water pumps. I'm not having much luck with google. Stamped 8e0-8506 B and 8e0-8505 B. I'm not finding anything else with the flat mounting flange above the water neck.

 

337 Lincoln or truck

 

Okay, should be "8EQ". Looks like for the big trucks. The Lincolns don't seem to have that p***age for the heads.

 

Both the Lincolns and the trucks used pumps with that p***age. The external water byp*** was a running change. The early 337s don't have them, the later motors do.

If the pumps are narrow belt then they are definitely Lincoln p***enger car.