73 Riv rear end into a 70 Skylark GS clone

I'm wondering if a rear end from a 73 Riv will bolt right in on a 70 Skylark?Or would it have to be modified?
Tom

 

Will not go period. It is a 93/8.

 

Shucks.
Thanks

 

Is that rear a posi??

 

I don't know.It's a parts car.I saw it in a local paper and called the owner.He said it's a 12 bolt,but wasn't sure if it's a posi.I'm more interested in the 455 etc.If it's a posi,and I pick it up I'll contact you.If I don't get it and it's a posi I'll give you the guys #.

 

It is a 12-bolt, but as he said, it's WAY too big to go under an A-Body. If you find out it's a posi, snag it - they're rare as hen's dentures.

 

Tom,
was this in the classifieds?

 

Rob,

Why?

Tom

 

Just wondering if this was a classified ad in the paper or internet. Im not going to go looking for it and snag it out from under you.