I have a spare rear from a 1970 Cutlass S. I am pretty sure it is a 2.76 gear and open carrier but the housing is in good shape and other than brakes looks to be usable. $50 someone can have it. it is about an hour NE of Atlanta area. for any questions I can be reached at compedgemarine@windstream.net or my cell most of the time at 954-270-2628.
thanks
steve