Looking for a 7 1/4 rear diff...

I am in desperate need of a 7 1/4 rear diff out of a 73-76 A-body.... i am in Chicago if anyone has or knows anyone that has one!!!

Thanks!!!

I have a real nice drum to drum out of a low mile 71 Demon in Antioch, IL. I have a couple more but no idea what they came out of.