I just measured a flywheel with the "imprint" of an 11" disc on it. The bolt circle is 12.5" (diameter). I also measured one with the 10.4" disc. Same. 12.5". I THOUGHT they were different, but apparently not.
I would recomend a Hayes or McCleod SFI-approved flywheel. About $325. Good steel and not at least 35 years old.
I "like" Ram clutches for a streeter. The McCleod "adjustable" pressure plate is awesome in a "drag" car.
