Wanted to confirm some information on the 8 1/4 rear end (carrier swap)!

This is exactly what I am running.
73/74 A body housing with Dakota 3.55 sure grip and the disc brakes.
It did take different carrier bearings as you suspected.
I have the bearing numbers you need, though it might take a bit to locate them on the computer.
Thank you, that is good to hear! The bearing numbers would be great whenever you get the chance, also for others to reference in the future. Did you just use the same bearings that come standard on the 73/74 carrier but installed on the dakota carrier?