73 Dart 3rd member swap

Okay guys... you are saying that I have a 7 1/4 rear in my Dart Sport. So actually all I need is to redrill the axles of the 8 3/4. Now my next question is, will the drums off of the Dart (big bolt pattern 10") fit onto the 8 3/4 or are the drums different? Sorry guys but I am just trying to get it right. Exactly what are you calling the tubes? are you speaking of the housing diameter where the axles are inserted? I'm a newbie to the rear end swap stuff and all of the jargon..Thanks guys