want to buy 62-70 b body 8 3/4 rear end

Hello i have a 63 valiant and i need a 65-67 b body rear end. I would prefer if it was complete hub to hub and able to install it and use it.
I looked at a body rear ends and they are out of my reach. So those year rear end will work. Ill just have to move the perches a half inch and get steel offset rims.
This is a father son project so any help would be very much appreciated. Thank you for your time.