You and I will just have to disagree. You also disagree with the service manuals from that time. Even my "72" 340 Duster had swedged Rotors, so it is not just an early vs late thing.
Then you will be the one who loses here. None of the Kelsey Hays rotors were swedged. Not a one. I am pretty sure the later rotors for the single piston system weren't swedged either. I have never seen a rotor that was.
