were these dana 70's

 

Normally the Dana 70's cam under the vans (not dually). Why, I don't know. Most everything under the dually's are Vistion 10.25 or 10.50. But they are out there. I almost bought one in Houston a while back. If you are looking at one here is what they need to work on our trucks.

1. Speed sensor hole in the top of the diff.
2. correct spring perch width.
3. Correct flange to flange (where the wheel mounts) width.

I know they are out there for our trucks, I've seen them. They are just rare.