Well, I answered question #1 - I removed the fuel injection assembly including the mass-flow meter body and fuel distributor, as a unit. Not difficult, but involved - every fuel line connection had to be removed, the injector lines at both ends. This gave access to the 17mm bolt from directly above. With the engine jacked up, the mount was easily removed, but complete extrication was from underneath, tricky, and could only be accomplished with the steering linkage full left. New one attached easily once maneuvered into position. Engine is much smoother and quieter now with both mounts replaced.
Now I still need to determine the correct belt tension. Alternator bearing is making a racket most of the time, and previously it was only occasionally. Anyone know the correct tension?