#1
Will Gotojh locking tuners drop right into a Jackson headstock?
My Gear:

Jackson JS30WR
Vox Metal headphone amp
Ibanez 10w POS amp
#2
Measure the diameter of the holes on your headstock, then find out what diameter the gotohs need, then you will know.
Bari Build

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#3
Thanks captain obvious! I was actually wondering if someone in the multitudes of shredders and would be lutheirs on UG had already done so!
My Gear:

Jackson JS30WR
Vox Metal headphone amp
Ibanez 10w POS amp