I had been constantly surprised how many new guitar hero boards I discovered after I started this project.
While dissecting a Les Paul for Wii, and I made new two discoveries: yet another fret board (TG-GUITAR-W-G1) and “TG” style fret buttons.
Luckily, the GH-03 is an exact fit. Best as I can tell, this is a non-US type guitar. I’m sure more surprises await.