who's interchangable?

derekm803 said
What all can u pull those axles from if u got the 7.25 rear end?

Just get a complete bbp 7 1/4 rear and be done with it.
Or better yet, a bbp 8 1/4 would be a lot better. Just look for a '73 and up a body with a v8 and it will have either.