Yup, heres my campers D70 dually. You can see the fill plug in the diff cover, so it's a Dana.





I wish my '85 van was an 87+ as it also has the D70 axle (single wheels) but have to take the axles out to get the drums off.

 

I will check where the drain plug is. The axle nut was like 2.5" I couldn't find a socket for. I rented the axle socket set from the parts store and those were all to small.