Set the face of the headstock well down from the level of the fingerboard as on the first photo.
You could retrieve the neck by grafting on a new headstock.The second photo has a headstock grafted on with screw in brass eyes to hold the strings down.
Use a 'three square' (triangular) needle file to make the nut grooves then you dont need to worry if the string fits.
Comments
Set the face of the headstock well down from the level of the fingerboard as on the first photo.
You could retrieve the neck by grafting on a new headstock.The second photo has a headstock grafted on with screw in brass eyes to hold the strings down.
Use a 'three square' (triangular) needle file to make the nut grooves then you dont need to worry if the string fits.