A question I should of asked before

As some of you may know I have a 70 b body 8.75

It's being narrowed to a body lengths.

I have a pair of abody 8.75 axel.shafts on the shelf from a 71/2 deamon

Will these a body axels fit inside the b body axel once narrowed to correct a body size?

Or should I get the b body axels shafts that are with it cut and resplined?

Send Cass, who is also known as Doctor Diff an email with your parts spec's. He is one of the kindest and most knowledgeable guys regarding rear ends and brakes. He's amazing actually.

You can find his website by searching "Dr. Diff".