How much advantage in adding rear disk brakes?

66 Sat said
Don't you need to convert to Green bearings as well with rear discs?.

there are kits available that uses stock tapered bearings when converting to rear discs in the 8.75 the Dr Diff kit comes to mind. A member @dodgedifferent2 fabricates a hardware kit for the sane application where you purchase his hardware and buy the rotors, calipers etc locally. That’s the route I used for my rear discs