Thank you, gentlemen. I failed to use the search function here effectively. But is the length of 49.56" from center line of the U-Joints?
I think a buzz/vibration I have at any cruising speed is directly attributable to either the seemingly shallow penetration of the yoke into the tailshaft or a need for slightly more pinion angle. There was a significant vibration prior to replacing the entire rear yoke and balancing the assembly. Additionally, I found that the pinion angle was off by a minimum of 4*. I used 4* wedges to bring the pinion angle into spec and have 6* wedges to add another 2* before I go order a replacement shaft.
paul