8 3/4 swap

Bob, I don't think the '66 or '67 Valiants were available with the 8-3/4. However, I know the 8-3/4 was available in the '67 Dart. A friend of mine had a '67 Dart GTS that was ordered from the factory with a 383, 727 torqueflite, front disc brakes (non-power), and the 8-3/4 rear end. Not very many of the '67 Darts were so equipped, however. I ran an 8-3/4 rear end and springs from a '70 Dart GT in my '65 Barracuda for 40 years; the whole assembly was unbolted from the Dart at the junkyard and bolted into the Barracuda with no modifications. I'm not sure about the '72 Demon; the width might be different.