That's what I have,drum to drum posi 331 gears $900.00,pickup or can deliver to Cecyl,after a good deposit.That would be for 68-72 A body..BrunoD.
King look at this http://www.nastyz28.com/2gcog/rearaxle.html http://www.yearone.com/yodnn/Portals/10/GM-diagrams/GM-AxleID.jpg I have this in my car great ratio for BBB 60MPH 2300 28" tires