Well if your armature is good and happens to be a 215330, I have a 7.2" motor (115334) that is only missing the armature that I'm giving just for shipping cost. I can't tell what type of motor that is, don't see a serial number or any other identifying info. I'd guess you have something closer to a 5.7" though.
But if it's just water damage, I'd say there's a good chance a cleaning and bearing replacement would get it going. Bearings are cheap and pretty easy to replace in these.