I have a 67 guild Starfire III body that I got very cheap- the reason being the neck is a mess. Someone replaced the headstock and did a sloppy job. Worse yet however, is when they did so it seems they couldn’t manage the binding route- so they narrowed the entire neck the width of the binding on each side. The width at the nut is stupid narrow as a result. salvaging the neck will not be easy- if not impossible. Not sure if the heel is reusable or not, there is not a lot of info online about making new set necks... Which surprises me, as there are plenty of gibsons worth making a new neck for at any cost. Is this something a luthier might take on? Obviously it would be expensive, but how expensive? Considering the guitar is a nice vintage instrument, and I have almost nothing into it, I’m not sure I could go wrong either way unless the cost of a new neck exceeds the price of another vintage unit. By sheer coincidence, my dad has a 65 or 66 starfire III, so I have all of the dimensions of an authentic vintage neck and a headstock to trace.