B-body disc brakes
You might also call up Roger at AAJ Brakes, up in Portland, Oregon. He has a cool operation, out of his home shop, and knows Chrysler brake interchange like the back of his hand. His specialty is disc brake conversions on our cars, but with only Chrysler components,i.e. Volare.
(503) 890-1469
Try to not talk his ear off too much. He's busy with work.:)