11” X 3” Rear Brakes

Hi everyone, I’m about to start in on a truck Dana 60 to narrow and set up for my ‘68 Dart. I’d like to add a set of 11” X 3” drum brakes to this. Is anyone parting out a late 60’s early 70’s fullsize that might have these. I’d like the whole mess, chicken, guts, feathers, and garters. Any help would be appreciated.
Big Ford brakes are reproduced in a kit but I’d like to keep everything from Ma Mopar if possible. You know how it is....
Let me know if you got something that would work. Thanks!