I've seen the footage where Michael gets his revenge but it's true it isn't on the DVD trilogy. About 20 years ago the BBC1 in England showed the Godfather in chronological order (obviously without part III) and all the cut scenes were used including Fabrizio's death. Unfortunately I don't know where to get hold of this footage. I wasn't born when it was shown but I've seen it because my father had it on video years ago. I hope this answers your question but sorry I couldn't be of anymore help.