>>6536786I got my SS3 Goku earlier today and I managed to mod him to accept the older heads.
It requires you to sacrifice an awakening Goku for the inner frame and neck, and then you need to file it down to key into the new torso and you pretty much have to glue it in place, so it's not the most elegant procedure.
It's probably not worth it unless you have a fucked awakening Goku to part out like I did, and I feel like the God Goku won't have this problem but fuck it, I'm impatient.