Olds Type O rear end???'s

I have a couple 12 bolt Cutlass rears from a 70 model. After reading online I find out it's a 12 bolt with 10 bolt guts. What guts? 8.5 and 8.2? What posi and gear do I need to buy?

 

8.4"?
http://www.jdrace.com/Rear_ID/12bABodyOlds.htm
http://www.jdrace.com/

Talk to Jim (monzaz). He'll let you know what's out there.

 

I got my posi stuff from these guys
http://www.supercarsunlimited.com/
Lots of info too
Adam

 

Thanks guys. I have been studying online for a couple hours. Seems like parts for the O are the problem. I will keep looking.

 

Sell them to an Olds nut and get the corporate 8.5" from a 71-2 Skylark/Cutlass.

 

I am making those posi units much cheaper than super cars. PM me I will help you.

Can not do anything about the gears 300.00 3.42 and 3.91. Jim