How many quarts?

That's a Sure Grip. Throw some LSD additive in.

I have read about Sure Grip with Clutches. It would be great to see a Picture of yours under the Cover. I don't think the Fender Tag shows much about the Rear end But I will decode it and report back.
here's a great site for Fender Tag decoding depending on what year your Mopar is. http://www.mymopar.com/index.php?pid=87