gear rollover is a chattering noise.

lsd's tend to "moan" i guess you could call it a whine as well. I remember my car had a whine from a throwout bearing that I assume was going bad. Only really noticed it when downshifting though.

1999 Silver Frost SVT #609 of 2760 Quaife, lightened SVT Flywheel, SPEC stage II clutch, removed resonator, k&n drop in - various other goodies too.