I have a spare Mac (ancient) and want to use its soul

Hi guys,

You may have seen my attempts at making iMessage work.

I've failed. I've however succeeded in cloning my real MacBook MLB and ROM with fake serial on clover. It all works. I know this can't last forever as I can't use both devices at the same time. However, I have found a spare old Mac like 2006 old. It's running OSX Leopard. Ancient.

None of the current extractors I have found on the internet allow me to extract its MLB and ROM. Is it possible to extract it? How?