I am experimenting with techniques to mount new style and resin cast heads on old style fused bodies.
(Resin heads are less than 1/4 as expensive as regular heads, but they are traditionally used with screw type bodies that are 2x as expensive as non-screw type bodies.)
My best solution so far is wood. A wooden dowel, rounded off at the bottom and notched about a quarter inch up to stick in the neck. It'll get trimmed where the holes are in these images, and then glued in to the neck.