Sorry for the delayed response. . been a busy week.
It was a direct swap, I don't know the ratings, but if they put them on the 3rd gen 2500, I assume they are rated the same or better than the 2nd gen 2500 rims. But, I know what assuming can do. Also, the center caps came with the 3rd gen wheels, so they all just fit perfectly.
Good luck with your swap.