I was shocked to find out that there are (at least) 13 different fret boards, depending on the guitar and the game system. So much for 'standards'.
I can also appreciate that it may not be easy to tell one board from another. For instance, the GH-07 and GH-08 look identical, but they ain't.
Whereas the GH-03 and GH-04 are electrically identical, but have different sized mounting holes.
If you've studied the Selection Guide but you still can't be 100% sure, don't worry - you may have the 14th variation that I haven't seen yet.
Here's what to do:
Take a good, well lit photo of the original fret board from your guitar - I only need one photo of the side of the board with the traces and switch pads on it.
A good, readable photo of the plate that tells the guitar name, manufacturer, etc.
Email the photo and a short explanation to support@hobbycnc.com.
I'll take a look for you.