Warmoth guitars has parts like necks custom for projects like yours.
My own personal recommendation is to find another Jackson guitar with all the parts already there and swap out the body, or just fix up the newer one. Resurrecting something like this from the dead can be (usually is) more expensive than buying a complete guitar.
If your glasses fog up and you want to make your own mask fans, here's how;
"My happiness doesn't depend on anything. My heart is always happy. I do have anger issues though."