I just built a Gr-1sf (love it!) and I wondered about building one that had the same style body but just a little shrunk down. Maybe slightly smaller body size, but the main thing would be a shallower depth. The Gr-1sf is about 3&1/4 inches deep, at least 1/2 inch bigger than the electromatic series. I even wondered if it was possible to cut the Gr-1sf body down somehow...anyway that would take a great instrument and make it a little more comfortable to play I think.