Originally Posted by mach4

Any good rebuilt water pump will be fine. If you think about it a water pump is a casting, a shaft, an impeller, a bearing and a seal. Unless it's been severely neglected the first three will be fine, which means replacing the seal(s) and bearing(s) will give you an essentially "new" pump. So just get one from a reputable rebuilder.

Generally it's recommended to get one with a cast impeller rather than a stamped one, but that's probably a small distinction in practice.