VE Series 1 MY10 (from Sept 2009 onwards), VE II and VFs with the SIDI LLT and LFX engines had an Alternator Decoupling Pulley on the alternator. This allows the alternator armature to overrun during engine deceleration events (which occur 3 times in every engine revolution), and also dampens the drive to the alternator in the driven direction.
If a VZ alternator (without an ADP) is fitted to a VE II etc, then the serpentine belt and tensioner vibrate violently.
Maybe an alternator with an ADP could be retrofitted onto a VZ or early VE Series 1 to reduce vibrations also.
The alternator in this pic has an ADP fitted: