Water pump impeller contacted cover

[VxZeroKnots]

howdy all. I thought I'd read somewhere about the above being an issue on the newer bikes? Mine is a 12 and took a nasty hit to the water pump cover quite a while ago.

I didn't think much of it but on inspection today I can see the impeller contacted the cover when the rock hit must have shifted it. The cover is slightly scored and as are the tips on the impeller vanes. You can't see the damage the the vanes but can feel it with your fingernail?

What all should I replace? The impeller and the cover or just the impeller? Perhaps the wp bearing and seal while I'm in there? Like I said, this probably happened some time ago (~50 hrs) and I got lucky so I think it's mostly ship shape but I want to be cautious.