Goku head scanned from the effects set, the scanning was fixed and a test prototype version was printed in 0.30mm quality in filament, and it was tested on an original Goku figure, a saiyan raised on earth, the faces are compatible with the original, I'm going to leave some photos to show that it worked, I had to force to fit the peg of the neck joint into the head but I'm sure that heating it in water will loosen the plastic, in resin I haven't had the opportunity to try it yet