@Skreddy suggested Stan's Radiator in Lake Stevens to me but I'm pretty sure he told me he's heard good things but hasn't used them himself personally.
I need to have mine re-cored and was going to give them a call. Do tell who you end up going with.
How old is the water pump? Only 50k so is it the original? If not, who installed it? You or a trusted shop?
Basically when I'm at one of these crossroads, I imagine what would happen if say the water pump failed on me like next week while I'm out and about in whatever I'm driving. Can I survive...