a body dana 60

[440 4 spd duster]

just wondering how rare an a body dana 60 is I have one with 10-1 69 date code stamped in the posi and ring gear it has the boltholes for pinion snubber am putting it in my 72 440 4spd duster

 

[hemicop]

The only ones I know of came in the S/S stick cars-so pretty rare. But with that date stamp on it, I doubt it was in an A-body