I have a factory 1964-66 Buick standard Flywheel with pressure plate and disc. Used but all there. The inside diameter of the hole in the middle of the flywheel is 2.480 inches so it is for the 1964-66 nailhead 401/425. Check your crank flange for fit (2.480). It is heavy so keep that in mind for shipping. email me and I will send pictures jbwalton@wcshighspeed.com