Clutch diameter differences?

Thanks, cjh. I see that rockauto has a couple of different 10" clutches. You seem to be indicating that the clutch cover for the 10" clutch is larger in diameter than the 9-1/8" clutch. Problem is, that I can buy plenty of clutches, but no one sells flywheels. I took no pictures, but when I put this clutch in (the old one broke a keeper for the anti-chatter spring, or I would not have messed with it) I seem to recall that there was an area on the edge of the flywheel that was not being used.