New Scamp Owner

Hey, anybody know where and what kind of rear end I can put in my Scamp if I decide to go with the 440? Do I have to find an older mopar with a 8 3/4 rear or can I use something easier to find and a lot cheaper like a Ram pick-up or Jeep rear end. I don't have a problem shortening the rears since I do weld. I have many questions. Tim