what i was told was that this was that this axle was a dana 60rear out of a dodge w200 from the late 70's and i do not think that it is 
and here is what i got on the ring gear are these numbers 
4 20 79 dana d 32503a a3d20 46 13 
i figured out the 4 20 79 was a date code 
the 46 13 was ring and pinion count which means i have 3.53 gears 
the wms to wms measurement is 65" 
and the only casting numbers i can find are 88-19 on the pinion side of the axle and a c-30255 on the cover side 
there is an 8 lug pattern and the drums are about 12" in diameter 
the axle shafts are 1.25" in diameter
here are the pics 






one more thing it is fing heavy 
i am picking up the front that goe with this later today 
thanks in advanced
sorry for the bad pics that is how they uploaded from my phone