It's just a movie, not a full TV series or whatever. In absolutely certain the original reels or negatives exist to do a real upscale. For most things I'd rather just keep the original home release quality and leaven it as is, or at least DVD quality for most I should say. Horror movies should be vhs quality as well as certain comedies etc. But if you're gonna do it, don't half ass the process. A lot of people worked really fucking hard to make it look how it does and having an AI paint all over it and call it better is crap.