I'm thinking of replacing the head on my Calvin Johnston Megatron with the head from a Universe Galvatron. I've seen a picture online of it done and the CJM body makes a sweet looking Galvy.
The CJM has a head with a ball joint that clips into the neck and Galvatron has a swivel joint, the pin of which reaches into his head. I'm not sure how to go about the transplant.
Does anyone have any helpful ideas?