what rotors fit?

Ok guys.
The reason I said that is I have had 2 1976 Dart Custom Sedans and they both had the 11.75 Rotors and 15 inch rims And BBP 7-1/4 Rear Ends.
I bought both cars from the original owners and both cars were as bought new down to the body color rims.
I do not post information that I have not verified myself in the 30 years I have been working on mopars.

I am also ok with being corrected if I am wrong on something.

So if this info is incorrect all I can say is thats mopar for you.

Later,
Bruce B.

There is NO way a 76 Dart left the factory with 11 3/4 inch rotors and 15 inch wheels.
You are mistaken. It's like saying you had a 76 Dart that left the factory with a 426 Hemi.
Im not wanting to get into a pissing contest with you here, but this is the first time i have ever heard of someone saying a A body Dart was constructed with the components that you are saying. Just not true.