I have found 4 Dana 80 Axles, two are from a ford van ( the lugs are longer for a dually, must have been a cargo van. ) and the other two were not marked when the salvage yard removed them. One has extremely short lugs, maybe 1" or less in length, and the drum brake assembly is much narrower compared to the others. I have measured my 70 currently on my truck and will go back to see if one of the others would fit. Like I said the axle perches and shock mounting points don't really matter as I can remove them and reweld to fit my application. Now I am just wanting to make sure that the other axles I have found are not to narrow for my truck. ( don't know if axle tubes are the same length for different applications )