what rotors fit?

Please go to this site/page,
http://www.moparaction.com/tech/archive/disc-main.html
Go to the section titled "Starting Point",
Read the that section;

"The factory finally got their act together in 1976 with the introduction of the 11.75" unicast police rotors with cast-in reinforcing ribs (see fig. 2)". It's these rotors that we're going to install on our subject car, a '71 383 'Cuda. We’ll deal with the actual how-to-do-it part of this swap with a set of detailed captioned photographs, which will walk you through the entire procedure, step-by-step.

Maybe it was because both my Darts were fleet cars?
1 was an A38 Police Dart the other was a factory Taxi.
I dunno.

Later,
Bruce B.

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