Re: Putting a JEM neck on a RG1570?
The neck width and string spacing are two different specs. The string spacing is determined by the bridge and the nut. One can have the same string spacing on a wider neck, but generally, the strings will be spaced further apart. If you use the same nut as you currently have, you will retain the same string spacing. If the Jem neck is narrower, this might not work. You might be wise to verify that the nut is the same spec on your guitar as on the Jem before you do this. Rich at Ibanez Rules would likely be able to help you.