Hi Crank. Short answer... NO! The shocks are towards the front of the rear, rear itself is longer, driveshaft has a CV joint type set up and you can not find gears or posi for that rear. It's not a 12 bolt like you think. Go on the Oldsmobile forums and you will see what I am talking about. Quick answer is let it go. Not what you want or need. Just my .02