Please tell me what parts interchange between the 2.45/2.25 vice 2.71->up 8 1/4 axle

So what's your point? Are you just digging a hole to try to find an answer you want to hear or what? I don't get it. We straightened this out in the other thread.
It was a joke lol was just showing you one of the posts that will make you go in circles I’m good I know what I need brotha