hey guys,
I am after some opinions.
Today i noticed that i has a small vibration in the drive line, coincidentally I was on my way home with some diff oil as i underestimated yesterday.
So not thinking much of it, I got home and drained the oil from the rear diff, all looked normal. However when i was cleaning up i noticed a rather large chunk of steel in the dirty oil which happens to be about half a ring gear tooth.

bugger
So my question is, can i run it like this for the time being , it still runs quiet and its quite hard to pick the vibration, or will it get much worse very quick.
and what should i be looking at for a reasonable replacement cost. I have been quoted $1000 for a reco or $495 for a front rebuilt to suit a rear from the only place i have found with any sierra gear. apparently the fronts are still in good enough condition to not need a reco. would this be a reasonable solution ??