which rear end do i need

[66supercharger]

i recently bought a 66 charger that came without a rear end. i am new to the mopar world and have no idea what i should put in there. i'm putting a 440 in the car that is pretty much stock except for an intake and carb. it will also be an auto. what other cars can i take one out of that will work in mine. any help would be great. i will be going to the nationals this next weekend so if anyone has one that is going i may be interested in it,

[73chargercali]

you will want and 8 3/4 rear end if you would like a good reliable rearend  with plenty after market support, but if you can afford it i would suggest a dana 60 for a bullet proof design (just incase you have plans of serious horse power down the road.)

this website has lots of sizes and how to id the rearends.

http://www.moparts.com/Tech/Archive/axle.html

good luck on your project.