A body 8 3/4 sure grip complete rear

Are all the brake components in working order? Would this rear end be a direct bolt in for my 69 Dart? Would I need to get a different length drive shaft? Any idea if the spring perches over the axles are mounted in the same place as the perches from my Dart? Could the axles be swapped out of this and convert to big bolt pattern? Don't know enough about the rears. Apologies for all the questions.