Check these guys out. They rebuild Alternators, generators, starters and I am pretty sure water pumps. They rebuild and ship all over the U.S. Last time I was there getting an alternator to replace my generator they told me they rebuild and ship about 40-60 alternators a week. Very helpful group of guys. they have been in business a long time.

https://www.hamiltonsalternatorsandstarters.com/

Dave from Northern Kentucky
My 54 3100