Front drum brakes get large bolt pattern b/e body parts

Yes.
I put 10" front drums from a 70 Charger on a 74 Dart that came with 9" drums just to get the larger bolt pattern. The Dart used 2 different upper control arm/ball joint designs too. The 9" used the small ball joint, the 10" drum and 11" disc used the larger ball joint used on all B and E bodies. That ball joint only fit the A body control arm used on cars with the 73 and later front disc and the 10" front drum brake A body models.