Shell swap then? You can definitely fit the internals of a 101 model into a 001 shell, I did it last year :')It's also a JP model, which is a little weird to find in the states. AFAIK, Pearl Pink was only ever released with AGS 101 SPs, so it's possible the label might be misprinted?
I don't believe it could be a screen swap, AFAIK they use different pins and nobody has made a converter cable (that I'm aware of, anyways, besides OG GBA backlit mods like Afterburner).