I had to remove the drive to replace the bellows. While in there, I also replaced the gimble bearing. This bearing is what the driveshaft rides in. I did not take any photos of all of this. After the work was done, an alignment tool must be used to ensure the bearing is centered and the engine is in alignment with the driveshaft. If it is out of alignment, the drive would not go in. The engine front mount is adjusted up or down to bring it in alighment.