Dana/Spicer factory bolts are grade 8+ and considerably strong, don't waste money if they're not damaged, BUT... carefully inspect them for thread damage and elongation which you can easily do with the human/naked eye. If they LOOK good, they probably are.

I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas Jefferson

Freedom must be repurchased by every new generation
General Daniel Jones, WW2 Tuskegee Airmen