Yeah, a wider neck should be easily done by any competent luthier. If you're looking for something off the shelf, you might try to find an old Gibson F25... these are basically steel-stringed classical sized guitars with a 2" wide neck at the nut.
Ah, I see there is one for sale in the classifieds:
http://www.acousticguitarforum.com/f...d.php?t=211050