I came across your post from 2011 about your giubo hardware and vibration dampener issue. I hope that by now you've got it sorted, but it was obvious to me that your dampener was installed horribly wrong. It should be fastened through the receiving end yolk of the driveshaft to the giubo. The slots in the dampener then allow you to access the other 3 bolts to the tranny output yolk. The situation that your images show would require some disassembly of the tranny to remove the dampener. I'm quite surprised that no one caught this at the time.
