1972 duster drive shaft question

That is the correct adapter u-joint. But if you find the right drive shaft and yoke. You may not need the dual size U-joint.
Very true but I have this one drive shaft in my hands an is only reason I was thinking of using , but if I find the correct one I will buy if price is right ,or I may have the correct ends welded on drive shaft as there is a place near me that can cut an balance but unsure of cost at the moment , as for now I am waiting on the new rear end to be delivered so I can install , and get better measurements , ordered some ESPO springs as well with shackles , so I am still a ways off to make any definite decisions , but thanks for your input as it been very helpful