4.11 in the 60 you cound use the above pic as long as it's not a late model. for the 4.565 fine spline to a 68 I think you need to use blank flanges or like Kurts and rotate and redrill. Jeff was telling me that joe at cts has blanks flanges. kurt, can you get blank flanges or are they all predrilled? coarse and fine round flanges?