Young Gun's 72 Swinger

Okay so lately I've been going through finals week and not working on the car much but figured I would give an update. The motor is ready to come out because, as you guys know, the project never stops. A freeze plug decided to start leaking so I have to pull it and while it's out I'm converting to manual steering since I have a spare box.
My question is how much is a power box and new pump and belt worth? I would like to sell it
Also, over Christmas break I'm looking to put my 8 3/4 together. What is the best axle kit for the money? I have a 3.23 surgery 489 case ready to go.
Thanks!