Will 4” diameter driveshaft fit 70 duster? Things to consider?

Swapped the rear in my 70 duster to a Dana 60. Can get a 4” diameter driveshaft in the right length for cheap. can I run this without clearance issues? Anything else to consider by using a 4‘’ diameter deiveshaft?
What size u joints does it have? What size yoke on the diff? Kim