I didnt use the lock plates, mine didnt have them when I took it apart. I did use red lock tight, and about 100lbs of torque to install each bolt on the flywheel. Before I pull the engine, I am going to pull the Tranny. That way I can start it up and listen again. Do loose flywheels knock? I had a VW that had the flywheel come off on the freeway, it didnt knock as a warning. It did however scare me worst than any other driving mishap.