Rear end 7 1/4 to 8 1/4 swap

Hello i was wondering what i need in order to switch my 7.25 rearend to an 8.25 rear end? I now im going to have to get better springs, u bolts, and shock plates. But am i going to have to shorten the drive shaft at all?
you should find what you need here.you didnt say what you are working on so i can only guess...7 1/4 to 8 1/4 rear end Swap