8 3/4" suregrip carrier swap

No go to doctordiff and you Will see there is diferent Bearings set
Biger to smaller pinion
That's why they have different bearing but the sure grip can be used in all the cases

741 smallest

742 medium 1 3/4'' pinion could be the best one there is discussion on that

489 largest 1 7/8 pinion but need a crush sleeve or a sleeve eliminator

Hope that help you

Bob