? will a 12 bolt posi out of a 68 chevelle ss fit in a 72 cutlass which currently has 10 bolt limited slip rear end and if so are there any adjustments I need to make Thanks Robbing Peter to pay Paul LOL

 

Physically it will bolt up. It will need a special u-joint with two caps for the chebby yoke and two for the Olds driveline. I don't know if you'll need a different driveline length. My personal opinion if you've already got a limit slip in your car the corporate 8.5 rear used in 1971-72 is hard to beat. I'd think twice before swapping it out. John

 

I'd keep what you have in there.

 

the guy that rebuilt my rear said the same thing. he said the 8.5 is better than the C 12 bolt. i do not know personally, just what my guy told me.