Not such a dumb question.
Some one could have just told me, "It will be stamped on them"
The crank should be fine, however I am thinking of replacing the bearings with the engine still in place, so unless im top notch with an angle grinder, it will not be having a regrind.
All depends if the funny noise I hear is actually these bearings. Its going to a friends today to have the knock identified.
It could just be a tooth missing in the transfer case or a knock from some where else.
The engine was only re-coned 3 years ago and I dont do to many miles so I would be surprised if it were these bearings.
However, I thought would still ask the question incase it was...