stick shift vibrates
 

why when i rev up the motor in neutral or on any shift the stick start to vibrates and came a weird sound from the differential

well its normal for your shifter to vibrate whenever your car is running. unless its really noticeable. and if your diff is making a noticeable noise then you could be low in fluid or its starting to go.

What kinda sound? Wet finger around the rim of a crystal glass or grind/thud?