a brilliant lecture series by Professor Daniel Robinson on consciousness ended with the idea that we may never be able to understand consciousness completely, just as the last thing fish may understand is water.
while consciousness remains an unsolved, unlocalized entity in the human constitution, it is almost certainly not related in a sense of direct origin to any other organ.
you ask what pig-hearted people ( i am not sure any exist, but lets say machine hearted people ) think. There is no more basis for saying anything about what they think, or even ‘that’ they think, than there is for what you think, or ‘that’ you think.
Other organs, when damaged, do not induce an altered sense of consciousness (unless indirectly by altering the brain chemistry). Damage the brain, you change the sense of consciousness, even sense of morality
this is not to say that the issue of brain transplantation doesnt exist. it may be possible one day to replace certain functionalities of the brain (say memory) with computer chips. at what point does this thing cease to be human? who knows?