#1
Hello. My friend gave me the body of a jackson JSX 94 and i have done some research on it and found it had a 22 fret neck. could I put a 24 fret neck on it or would it send the intonation right out?

thankyou
#2
Unless you can find a super freaky neck that would start in the same place and just extend the fret board over the guitar body, then it would upset the entire scale.
#3
It wouldn't. Normally fretboards just extend over the guitar body. Your neck pickup might get in the way, though.