I'll run the same R&P, and keep the new Crown Unit for a spare.
Reasons:
1) If I replace the R&P, along with replacing the locker and the bearings, and the noise goes away - I won't know if the cause was the failed bearing journal as I suspect, or the R&P.
Science right there. Minimizing variables so as not to confound the result
2) I can reinstall the current R&P without setting up the gears - I'll press on the new carrier bearings, set the backlash, and be done with it.
3) The current R&P gears look brand new. No wear at all. Probably only 1000 or 1200 miles on them.
4) I've been planning for a while to get and keep a spare R&P, since being shaved they are custom. That was my fallback when I ordered them in that if it turned out not to be the R&P (which it likely was not), I'll have a good spare. If I install the new R&P now, I don't have a spare as I would not reinstall a set of old gears down the road.